<?xml version="1.0" encoding="UTF-8"?>
<data xmlns="http://www.aopkb.org/aop-xml">
  <biological-object id="105fb1dd-ee2f-4854-83e1-80be76788ebf">
    <source-id>GO:0030665</source-id>
    <source>GO</source>
    <name>clathrin-coated vesicle membrane</name>
  </biological-object>
  <biological-object id="5cde19af-ff0e-4b55-b880-37b8b95ddd03">
    <source-id>PR:000049750</source-id>
    <source>PR</source>
    <name>influenzavirus hemagglutinin</name>
  </biological-object>
  <biological-object id="f12976d8-7982-4f30-943c-acf89185c163">
    <source-id>GO:0012506</source-id>
    <source>GO</source>
    <name>vesicle membrane</name>
  </biological-object>
  <biological-process id="368ffa5d-5c24-4cbe-86e5-e79ed66561e8">
    <source-id>GO:0005102</source-id>
    <source>GO</source>
    <name>receptor binding</name>
  </biological-process>
  <biological-process id="ed250a34-eb69-4771-9bbf-e894a5339614">
    <source-id>GO:0036010</source-id>
    <source>GO</source>
    <name>protein localization to endosome</name>
  </biological-process>
  <biological-process id="a87d153e-5d3a-4269-a4f2-573ceeedee92">
    <source-id>GO:0006898</source-id>
    <source>GO</source>
    <name>receptor-mediated endocytosis</name>
  </biological-process>
  <biological-process id="64f54e8b-9382-4f8d-95be-d8b8ec0753d3">
    <source-id>GO:0061025</source-id>
    <source>GO</source>
    <name>membrane fusion</name>
  </biological-process>
  <biological-action id="8f0da7d5-d681-48be-881c-795d1240704a">
    <source-id>3</source-id>
    <source>WIKI</source>
    <name>occurrence</name>
  </biological-action>
  <stressor id="6a92280d-4e84-4afa-962e-0a123988c7fb">
    <name>Influenza Virus</name>
    <description></description>
    <exposure-characterization></exposure-characterization>
    <creation-timestamp>2021-12-05T12:32:16</creation-timestamp>
    <last-modification-timestamp>2021-12-05T12:32:16</last-modification-timestamp>
  </stressor>
  <taxonomy id="41ac8772-df45-49fd-ba3a-5c42b0b282d2">
    <source-id>WCS_9606</source-id>
    <source>common toxicological species</source>
    <name>human</name>
  </taxonomy>
  <taxonomy id="fe2ca312-f2ca-4aae-a00f-6f3aef73f635">
    <source-id>WCS_9031</source-id>
    <source>common ecological species</source>
    <name>chicken</name>
  </taxonomy>
  <taxonomy id="ce60f766-f1e8-48f8-93ac-ee11e11e6960">
    <source-id>WikiUser_24</source-id>
    <source>Wikiuser:Migration</source>
    <name>Pig</name>
  </taxonomy>
  <taxonomy id="c67d34d7-f4b3-4b5f-9f8e-319d8a835982">
    <source-id>10090</source-id>
    <source>NCBI</source>
    <name>mouse</name>
  </taxonomy>
  <taxonomy id="8863bf2f-32df-4bb9-8dda-4c1aeae999d8">
    <source-id>9685</source-id>
    <source>NCBI</source>
    <name>cat</name>
  </taxonomy>
  <taxonomy id="8f4011e6-a9ce-44ce-a611-76fbb704214e">
    <source-id>WCS_9615</source-id>
    <source>common toxicological species</source>
    <name>dog</name>
  </taxonomy>
  <taxonomy id="8fc8a79e-4202-429a-8e32-89d22bfe012c">
    <source-id>9669</source-id>
    <source>NCBI</source>
    <name>ferret</name>
  </taxonomy>
  <taxonomy id="13e06393-e325-481b-835b-8ae3eed4a058">
    <source-id>10036</source-id>
    <source>NCBI</source>
    <name>Syrian hamster</name>
  </taxonomy>
  <taxonomy id="53ada860-9f19-4ec1-98c5-a052b618ad47">
    <source-id>10141</source-id>
    <source>NCBI</source>
    <name>guinea pig</name>
  </taxonomy>
  <taxonomy id="b77cd83c-31d0-4b13-87bf-0f246f90cd30">
    <source-id>9544</source-id>
    <source>NCBI</source>
    <name>rhesus macaque</name>
  </taxonomy>
  <key-event id="68a12074-dfdb-40b1-8bb3-0673e848d59e">
    <title>Influenza A Virus (IAV) binds sialic acid glycan receptor</title>
    <short-name>IAV binds receptor</short-name>
    <biological-organization-level>Molecular</biological-organization-level>
    <description>&lt;p style="text-align:start"&gt;&lt;span style="font-size:medium"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;&lt;span style="color:#000000"&gt;Sialic acid was one of the first viral receptors identified&lt;sup&gt;5&lt;/sup&gt;. Humans have 6 sialyl transferases that catalyze the addition of Sia with an &lt;span style="font-family:Symbol"&gt;a&lt;/span&gt;2,3 linkage to terminal galactose residues and 2 that catalyze the addition of an &lt;span style="font-family:Symbol"&gt;a&lt;/span&gt;2,6 linkage to terminal galactose residues&lt;sup&gt;6&lt;/sup&gt;.&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;

&lt;p style="text-align:start"&gt;&amp;nbsp;&lt;/p&gt;

&lt;p style="text-align:start"&gt;&lt;span style="font-size:medium"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;&lt;span style="color:#000000"&gt;The HA receptor of the IAV attaches to the surface of the host cell via glycoconjugates that contain terminal sialic acid residues. The virus then &amp;ldquo;scans&amp;rdquo; the surface of the cell for the correct receptor, using its NA to remove nonproductive HA associations. The exact receptor is currently unknown however human influenza viruses preferentially bind sialic acid linked to galactose by &lt;span style="font-family:Symbol"&gt;a&lt;/span&gt;2,6 linkage, while avian influenza viruses prefer &lt;span style="font-family:Symbol"&gt;a&lt;/span&gt;2,3 linkages&lt;sup&gt;1&lt;/sup&gt;. However, most viruses are not this dichotomous and the ability to bind sialic acid is more of a spectrum&lt;sup&gt;2&lt;/sup&gt;. Additionally, the human respiratory tract contains both types of linkages as a gradient, with more &lt;span style="font-family:Symbol"&gt;a&lt;/span&gt;2,6 linked sialic acids present in the upper airway transitioning to more &lt;span style="font-family:Symbol"&gt;a&lt;/span&gt;2,3 linked sialic acids in the lower airway&lt;sup&gt;3&lt;/sup&gt;. Some avian viruses can only replicate effectively in cells that express &lt;span style="font-family:Symbol"&gt;a&lt;/span&gt;2,3 linked sialic acids, which in humans is limited to the lower respiratory tract, which may serve as barrier to interspecies transmission and require that successful zoonosis is contingent upon the ability of the virus to bind &lt;span style="font-family:Symbol"&gt;a&lt;/span&gt;2,6 linked sialic acids, making this a marker of pandemic potential&lt;sup&gt;3&lt;/sup&gt;. However, this is complicated by new evidence that non-binding sialic acids can contribute to enhanced binding and infection through hetero-multivalent interactions&lt;sup&gt;4&lt;/sup&gt;. Individual hemagglutinin (HA) interactions with sialic acid glycan receptors are low affinity (K&lt;sub&gt;D&lt;/sub&gt; ~0,5 to 20mM) leading to a low initial binding rate but high avidity is achieved through multivalent interactions with a receptor coated surface&lt;sup&gt;4&lt;/sup&gt;.&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;

&lt;p style="text-align:start"&gt;&amp;nbsp;&lt;/p&gt;

&lt;p style="text-align:start"&gt;&lt;span style="font-size:medium"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;&lt;span style="color:#000000"&gt;Recent findings suggest phosphor-glycans are a potential alternative IAV receptor&lt;sup&gt;7&lt;/sup&gt;. Additionally, two subtypes of IAV found exclusively in South and Central American bats (H17N10 and H18N11) use MHC class II for entry&lt;sup&gt;7,8&lt;/sup&gt;.&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
</description>
    <measurement-methodology>&lt;p style="text-align:start"&gt;&lt;span style="font-size:medium"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;&lt;span style="color:#000000"&gt;Several studies have determined a dissociation constant (K&lt;sub&gt;D&lt;/sub&gt;) for IAV and sialic acid glycan receptors as follows:&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;

&lt;table cellspacing="0" class="MsoTableGrid" style="border-collapse:collapse; border:medium; color:#000000; font-style:normal; font-weight:400; text-align:start; text-decoration:none; white-space:normal; width:671px"&gt;
	&lt;tbody&gt;
		&lt;tr&gt;
			&lt;td style="border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:1px solid black; height:23px; vertical-align:top; width:273px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;&lt;strong&gt;Reference&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:1px solid black; height:23px; vertical-align:top; width:131px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Technique&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:1px solid black; height:23px; vertical-align:top; width:164px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Binding partner&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:1px solid black; height:23px; vertical-align:top; width:103px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Measured Kd&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
		&lt;tr&gt;
			&lt;td style="border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:none; height:80px; vertical-align:top; width:273px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;&lt;span style="background-color:white"&gt;&lt;span style="color:#222222"&gt;Sauter, N. K. et al. Hemagglutinins from two influenza virus variants bind to sialic acid derivatives with millimolar dissociation constants: a 500-MHz proton nuclear magnetic resonance study.&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;em&gt;&lt;span style="color:#222222"&gt;Biochemistry&lt;/span&gt;&lt;/em&gt;&amp;nbsp;&lt;strong&gt;&lt;span style="color:#222222"&gt;28&lt;/span&gt;&lt;/strong&gt;&lt;span style="background-color:white"&gt;&lt;span style="color:#222222"&gt;, 8388&amp;ndash;8396 (1989).&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; height:80px; vertical-align:top; width:131px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;500-MHz proton nuclear magnetic resonance (NMR)&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; height:80px; vertical-align:top; width:164px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;X-31BHA virus (H3N2) with a(2,3)-Sialyl- lactose&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; height:80px; vertical-align:top; width:103px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;3.2 mM&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
		&lt;tr&gt;
			&lt;td style="border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:none; height:80px; vertical-align:top; width:273px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;&lt;span style="background-color:white"&gt;&lt;span style="color:#222222"&gt;Xiong, X., Coombs, P., Martin, S.&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;em&gt;&lt;span style="color:#222222"&gt;et al.&lt;/span&gt;&lt;/em&gt;&amp;nbsp;&lt;span style="background-color:white"&gt;&lt;span style="color:#222222"&gt;Receptor binding by a ferret-transmissible H5 avian influenza virus.&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;em&gt;&lt;span style="color:#222222"&gt;Nature&lt;/span&gt;&lt;/em&gt;&amp;nbsp;&lt;strong&gt;&lt;span style="color:#222222"&gt;497&lt;/span&gt;&lt;/strong&gt;&lt;span style="background-color:white"&gt;&lt;span style="color:#222222"&gt;, 392&amp;ndash;396 (2013). https://doi.org/10.1038/nature12144&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; height:80px; vertical-align:top; width:131px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;microscale thermophoresis (MST) using recombinant HA trimers and surface biolayer interferometry (BLI) with purified viruses&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; height:80px; vertical-align:top; width:164px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;A/Vietnam/1194/2004 (H5N1)&amp;nbsp;with human and avian receptor&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; height:80px; vertical-align:top; width:103px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Human: 17mM&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;

			&lt;p&gt;&amp;nbsp;&lt;/p&gt;

			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Avian: 1.1mM&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
		&lt;tr&gt;
			&lt;td style="border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:none; height:80px; vertical-align:top; width:273px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;&lt;span style="background-color:white"&gt;&lt;span style="color:#222222"&gt;Fei, Y. et al. Characterization of Receptor Binding Profiles of Influenza A Viruses Using An Ellipsometry-Based Label-Free Glycan Microarray Assay Platform. Biomolecules 5, 1480&amp;ndash;1498 (2015).&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; height:80px; vertical-align:top; width:131px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Glycan microarray with a scanning ellipsometry sensor&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; height:80px; vertical-align:top; width:164px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;A/Memphis/1971 (A/Mem71, H3N1), A/Udorn/307/1972 (A/Udorn72, H3N2), and A/Philippines/2/82/X-79 (A/Philips, H3N2) with 24 synthetic glycans (oligosaccharides) including include four &amp;beta;1-4-linked galactosides, three &amp;beta;1-3-linked galactosides, one &amp;beta;-linked galactoside, one &amp;alpha;-linked N-acetylgalactosaminide, eight &amp;alpha;2-3-linked sialosides, and seven &amp;alpha;2-6-linked sialosides&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; height:80px; vertical-align:top; width:103px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;100pM&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
		&lt;tr&gt;
			&lt;td style="border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:none; height:80px; vertical-align:top; width:273px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;&lt;span style="background-color:white"&gt;&lt;span style="color:#222222"&gt;Vachieri, S. G. et al. Receptor binding by H10 influenza viruses. Nature 511, 475&amp;ndash;477 (2014).&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; height:80px; vertical-align:top; width:131px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Biolayer interferometry&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; height:80px; vertical-align:top; width:164px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;H10 virus to human and avian receptor&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; height:80px; vertical-align:top; width:103px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Avian: 1.81 &amp;plusmn; 0.39 mM&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;

			&lt;p&gt;&amp;nbsp;&lt;/p&gt;

			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Human: 1.39 &amp;plusmn; 0.32 mM,&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
	&lt;/tbody&gt;
&lt;/table&gt;

&lt;p style="text-align:start"&gt;&amp;nbsp;&lt;/p&gt;

&lt;p style="text-align:start"&gt;&lt;span style="font-size:medium"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;&lt;span style="color:#000000"&gt;Other studies have characterized this interaction to identify species specificity:&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;

&lt;p style="text-align:start"&gt;&amp;nbsp;&lt;/p&gt;

&lt;table cellspacing="0" class="MsoTableGrid" style="border-collapse:collapse; border:medium; color:#000000; font-style:normal; font-weight:400; text-align:start; text-decoration:none; white-space:normal"&gt;
	&lt;tbody&gt;
		&lt;tr&gt;
			&lt;td style="border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:1px solid black; vertical-align:top; width:253px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Reference&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:1px solid black; vertical-align:top; width:190px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Technique&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:1px solid black; vertical-align:top; width:181px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Finding&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
		&lt;tr&gt;
			&lt;td style="border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:none; vertical-align:top; width:253px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;&lt;span style="background-color:white"&gt;&lt;span style="color:#222222"&gt;Rogers, G., Paulson, J., Daniels, R.&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;em&gt;&lt;span style="color:#222222"&gt;et al.&lt;/span&gt;&lt;/em&gt;&amp;nbsp;&lt;span style="background-color:white"&gt;&lt;span style="color:#222222"&gt;Single amino acid substitutions in influenza haemagglutinin change receptor binding specificity.&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;em&gt;&lt;span style="color:#222222"&gt;Nature&lt;/span&gt;&lt;/em&gt;&amp;nbsp;&lt;strong&gt;&lt;span style="color:#222222"&gt;304&lt;/span&gt;&lt;/strong&gt;&lt;span style="background-color:white"&gt;&lt;span style="color:#222222"&gt;, 76&amp;ndash;78 (1983). https://doi.org/10.1038/304076a0&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:190px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Hemagglutination assay, HAI&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:181px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Specific mutations at site 226 in HA impact sialic acid linkage binding preference&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
		&lt;tr&gt;
			&lt;td style="border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:none; vertical-align:top; width:253px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;&lt;span style="background-color:white"&gt;&lt;span style="color:#212121"&gt;Rogers GN, Pritchett TJ, Lane JL, Paulson JC. Differential sensitivity of human, avian, and equine influenza A viruses to a glycoprotein inhibitor of infection: selection of receptor specific variants. Virology. 1983 Dec;131(2):394-408. doi: 10.1016/0042-6822(83)90507-x. PMID: 6197808.&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:190px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Hemagglutination assay, HAI&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:181px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Human, avian, and equine H3 Influenza A viruses have different abilities to bind sialic acid (human prefer 2,6, animals prefer 2,3).&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
		&lt;tr&gt;
			&lt;td style="border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:none; vertical-align:top; width:253px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;&lt;span style="background-color:white"&gt;&lt;span style="color:#222222"&gt;Childs, R., Palma, A., Wharton, S.&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;em&gt;&lt;span style="color:#222222"&gt;et al.&lt;/span&gt;&lt;/em&gt;&amp;nbsp;&lt;span style="background-color:white"&gt;&lt;span style="color:#222222"&gt;Receptor-binding specificity of pandemic influenza A (H1N1) 2009 virus determined by carbohydrate microarray.&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;em&gt;&lt;span style="color:#222222"&gt;Nat Biotechnol&lt;/span&gt;&lt;/em&gt;&amp;nbsp;&lt;strong&gt;&lt;span style="color:#222222"&gt;27&lt;/span&gt;&lt;/strong&gt;&lt;span style="background-color:white"&gt;&lt;span style="color:#222222"&gt;, 797&amp;ndash;799 (2009). https://doi.org/10.1038/nbt0909-797&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:190px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Carbohydrate microarray&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:181px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Pandemic viruses were able to bind both 2,6 and 2,3 linked sialyl glycans while seasonal viruses only bound 2,6&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
		&lt;tr&gt;
			&lt;td style="border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:none; vertical-align:top; width:253px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;&lt;span style="background-color:white"&gt;&lt;span style="color:#212121"&gt;Matrosovich M, Tuzikov A, Bovin N, Gambaryan A, Klimov A, Castrucci MR, Donatelli I, Kawaoka Y. Early alterations of the receptor-binding properties of H1, H2, and H3 avian influenza virus hemagglutinins after their introduction into mammals. J Virol. 2000 Sep;74(18):8502-12. doi: 10.1128/jvi.74.18.8502-8512.2000. PMID: 10954551; PMCID: PMC116362.&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:190px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Solid- phase receptor binding assay&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:181px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Alteration of receptor binding efficiency may be a prerequisite for zoonosis&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
		&lt;tr&gt;
			&lt;td style="border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:none; vertical-align:top; width:253px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;&lt;span style="background-color:white"&gt;&lt;span style="color:#212121"&gt;Crusat M, Liu J, Palma AS, Childs RA, Liu Y, Wharton SA, Lin YP, Coombs PJ, Martin SR, Matrosovich M, Chen Z, Stevens DJ, Hien VM, Thanh TT, Nhu le NT, Nguyet LA, Ha do Q, van Doorn HR, Hien TT, Conradt HS, Kiso M, Gamblin SJ, Chai W, Skehel JJ, Hay AJ, Farrar J, de Jong MD, Feizi T. Changes in the hemagglutinin of H5N1 viruses during human infection--influence on receptor binding. Virology. 2013 Dec;447(1-2):326-37. doi: 10.1016/j.virol.2013.08.010. Epub 2013 Sep 17. PMID: 24050651; PMCID: PMC3820038.&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:190px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Hemagglutination assay, receptor binding assay using sialylglycopolymers, biolayer interferometry analysis, carbohydrate microarray analysis, crystallography&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:181px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;H5N1 infection of human leads to decreased ability to bind 2,3 linked sialic acid&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
	&lt;/tbody&gt;
&lt;/table&gt;
</measurement-methodology>
    <evidence-supporting-taxonomic-applicability></evidence-supporting-taxonomic-applicability>
    <organ-term>
      <source-id>UBERON:0004802</source-id>
      <source>UBERON</source>
      <name>respiratory tract epithelium</name>
    </organ-term>
    <cell-term>
      <source-id>CL:0000066</source-id>
      <source>CL</source>
      <name>epithelial cell</name>
    </cell-term>
    <applicability>
      <sex>
        <evidence>High</evidence>
        <sex>Mixed</sex>
      </sex>
      <life-stage>
        <evidence>High</evidence>
        <life-stage>Adult, reproductively mature</life-stage>
      </life-stage>
      <life-stage>
        <evidence>High</evidence>
        <life-stage>During development and at adulthood</life-stage>
      </life-stage>
      <taxonomy taxonomy-id="41ac8772-df45-49fd-ba3a-5c42b0b282d2">
        <evidence>High</evidence>
      </taxonomy>
      <taxonomy taxonomy-id="fe2ca312-f2ca-4aae-a00f-6f3aef73f635">
        <evidence>High</evidence>
      </taxonomy>
      <taxonomy taxonomy-id="ce60f766-f1e8-48f8-93ac-ee11e11e6960">
        <evidence>High</evidence>
      </taxonomy>
      <taxonomy taxonomy-id="c67d34d7-f4b3-4b5f-9f8e-319d8a835982">
        <evidence>High</evidence>
      </taxonomy>
      <taxonomy taxonomy-id="8863bf2f-32df-4bb9-8dda-4c1aeae999d8">
        <evidence>Moderate</evidence>
      </taxonomy>
      <taxonomy taxonomy-id="8f4011e6-a9ce-44ce-a611-76fbb704214e">
        <evidence>Moderate</evidence>
      </taxonomy>
      <taxonomy taxonomy-id="8fc8a79e-4202-429a-8e32-89d22bfe012c">
        <evidence>High</evidence>
      </taxonomy>
      <taxonomy taxonomy-id="13e06393-e325-481b-835b-8ae3eed4a058">
        <evidence>High</evidence>
      </taxonomy>
      <taxonomy taxonomy-id="53ada860-9f19-4ec1-98c5-a052b618ad47">
        <evidence>High</evidence>
      </taxonomy>
      <taxonomy taxonomy-id="b77cd83c-31d0-4b13-87bf-0f246f90cd30">
        <evidence>High</evidence>
      </taxonomy>
    </applicability>
    <biological-events>
      <biological-event process-id="368ffa5d-5c24-4cbe-86e5-e79ed66561e8" action-id="8f0da7d5-d681-48be-881c-795d1240704a"/>
    </biological-events>
    <references>&lt;p&gt;&amp;nbsp;&lt;/p&gt;

&lt;p style="text-align:start"&gt;&lt;span style="font-size:medium"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;&lt;span style="color:#000000"&gt;References:&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;

&lt;ol&gt;
	&lt;li&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Paulson, J. and Rogers, G. Receptor determinants of human and animal influenza virus isolates: Differences in recptor specificity of the H3 hemagglutinin based on species of origin. &lt;em&gt;Virology&lt;/em&gt; &lt;strong&gt;127:2&lt;/strong&gt;, 361-373 (1983). &lt;a href="https://doi.org/10.1016/0042-6822(83)90150-2" style="color:#954f72; text-decoration:underline" target="_blank" title="Persistent link using digital object identifier"&gt;&lt;span style="color:#007398"&gt;https://doi.org/10.1016/0042-6822(83)90150-2&lt;/span&gt;&lt;/a&gt;&lt;/span&gt;&lt;/span&gt;&lt;/li&gt;
	&lt;li&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Get this from thesis&lt;/span&gt;&lt;/span&gt;&lt;/li&gt;
	&lt;li&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;&lt;span style="background-color:white"&gt;&lt;span style="color:#222222"&gt;Shinya, K., Ebina, M., Yamada, S.&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;em&gt;&lt;span style="color:#222222"&gt;et al.&lt;/span&gt;&lt;/em&gt;&amp;nbsp;&lt;span style="background-color:white"&gt;&lt;span style="color:#222222"&gt;Influenza virus receptors in the human airway.&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;em&gt;&lt;span style="color:#222222"&gt;Nature&lt;/span&gt;&lt;/em&gt;&amp;nbsp;&lt;strong&gt;&lt;span style="color:#222222"&gt;440&lt;/span&gt;&lt;/strong&gt;&lt;span style="background-color:white"&gt;&lt;span style="color:#222222"&gt;, 435&amp;ndash;436 (2006). &lt;/span&gt;&lt;/span&gt;&lt;a href="https://doi.org/10.1038/440435a" style="color:#954f72; text-decoration:underline"&gt;&lt;span style="background-color:white"&gt;https://doi.org/10.1038/440435a&lt;/span&gt;&lt;/a&gt;&lt;/span&gt;&lt;/span&gt;&lt;/li&gt;
	&lt;li&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;&lt;span style="background-color:white"&gt;&lt;span style="color:#222222"&gt;Liu, M., Huang, L.Z.X., Smits, A.A.&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;em&gt;&lt;span style="color:#222222"&gt;et al.&lt;/span&gt;&lt;/em&gt;&amp;nbsp;&lt;span style="background-color:white"&gt;&lt;span style="color:#222222"&gt;Human-type sialic acid receptors contribute to avian influenza A virus binding and entry by hetero-multivalent interactions.&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;em&gt;&lt;span style="color:#222222"&gt;Nat Commun&lt;/span&gt;&lt;/em&gt;&lt;strong&gt;&lt;span style="color:#222222"&gt;13&lt;/span&gt;&lt;/strong&gt;&lt;span style="background-color:white"&gt;&lt;span style="color:#222222"&gt;, 4054 (2022). &lt;/span&gt;&lt;/span&gt;&lt;a href="https://doi.org/10.1038/s41467-022-31840-0" style="color:#954f72; text-decoration:underline"&gt;&lt;span style="background-color:white"&gt;https://doi.org/10.1038/s41467-022-31840-0&lt;/span&gt;&lt;/a&gt;&lt;/span&gt;&lt;/span&gt;&lt;/li&gt;
	&lt;li&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;&lt;span style="background-color:white"&gt;&lt;span style="color:#212121"&gt;Matrosovich M, Herrler G, Klenk HD. Sialic Acid Receptors of Viruses. Top Curr Chem. 2015;367:1-28. doi: 10.1007/128_2013_466. PMID: 23873408; PMCID: PMC7120183.&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/li&gt;
	&lt;li&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;&lt;span style="background-color:white"&gt;&lt;span style="color:black"&gt;Human Protein Atlas proteinatlas.org&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/li&gt;
	&lt;li&gt;Sempere Borau, M and Stertz, S Entry of Influenza A virus into host cells- recent progress and remaining challenges. Current Opinion in Virology. 2021 doi:&amp;nbsp;&lt;a href="https://doi.org/10.1016/j.coviro.2021.03.001" rel="noreferrer noopener" target="_blank" title="Persistent link using digital object identifier"&gt;https://doi.org/10.1016/j.coviro.2021.03.001&lt;/a&gt;&lt;/li&gt;
	&lt;li&gt;Karakus, U., Thamamongood, T., Ciminski, K.&amp;nbsp;&lt;em&gt;et al.&lt;/em&gt;&amp;nbsp;MHC class II proteins mediate cross-species entry of bat influenza viruses.&amp;nbsp;&lt;em&gt;Nature&lt;/em&gt;&amp;nbsp;&lt;strong&gt;567&lt;/strong&gt;, 109&amp;ndash;112 (2019). https://doi.org/10.1038/s41586-019-0955-3&lt;/li&gt;
&lt;/ol&gt;
</references>
    <source>AOPWiki</source>
    <creation-timestamp>2023-07-31T13:37:09</creation-timestamp>
    <last-modification-timestamp>2023-08-02T10:27:29</last-modification-timestamp>
  </key-event>
  <key-event id="0d3fd203-153f-4bea-9af4-467b490730b9">
    <title>Influenza A virus (IAV) cell entry</title>
    <short-name>IAV cell entry</short-name>
    <biological-organization-level>Cellular</biological-organization-level>
    <description>&lt;p style="text-align:start"&gt;&lt;span style="font-size:medium"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;&lt;span style="color:#000000"&gt;IAV has two major surface proteins: hemagglutinin (HA) and neuraminidase (NA). HA binds to sialic acid glycans on the host cell surface to facilitate viral entry (1,2). Following this, the virion enters the cell through receptor&amp;mdash;mediated endocytosis (usually involving clathrin) or micropinocytosis (1,3,4). The virus is then trafficked to the endosome, where the change in pH activates the M2 ion channel protein of the virus, leading to a conformational change in the HA exposing the fusion peptide and causing subsequent fusion of the viral envelope with the membrane of the vesicle (1). Following fusion, the vRNPs are released into the cytoplasm in a process known as &amp;ldquo;uncoating&amp;rdquo; and trafficked to the nucleus (1). &lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
</description>
    <measurement-methodology>&lt;table cellspacing="0" class="MsoTableGrid" style="border-collapse:collapse; border:medium; color:#000000; font-style:normal; font-weight:400; text-align:start; text-decoration:none; white-space:normal"&gt;
	&lt;tbody&gt;
		&lt;tr&gt;
			&lt;td style="border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:1px solid black; vertical-align:top; width:208px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Reference&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:1px solid black; vertical-align:top; width:208px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Technique&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:1px solid black; vertical-align:top; width:208px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Finding&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
		&lt;tr&gt;
			&lt;td style="border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:none; vertical-align:top; width:208px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;&lt;span style="background-color:white"&gt;&lt;span style="font-family:&amp;quot;Segoe UI&amp;quot;,sans-serif"&gt;&lt;span style="color:#222222"&gt;Matlin, K.S., Reggio, H., Helenius, A. &amp;amp; Simons, K. Infectious entry pathway of influenza-virus in a canine kidney-cell line.&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;em&gt;&lt;span style="font-family:&amp;quot;Segoe UI&amp;quot;,sans-serif"&gt;&lt;span style="color:#222222"&gt;J. Cell Biol.&lt;/span&gt;&lt;/span&gt;&lt;/em&gt;&amp;nbsp;&lt;strong&gt;&lt;span style="font-family:&amp;quot;Segoe UI&amp;quot;,sans-serif"&gt;&lt;span style="color:#222222"&gt;91&lt;/span&gt;&lt;/span&gt;&lt;/strong&gt;&lt;span style="background-color:white"&gt;&lt;span style="font-family:&amp;quot;Segoe UI&amp;quot;,sans-serif"&gt;&lt;span style="color:#222222"&gt;, 601&amp;ndash;613 (1981)&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:208px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Electron microscopy&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:208px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Virus was seen bound to microvilli, in coated pits, coated vesicles, and large smooth-surfaced vacuoles, low pH was required for fusion, suggesting entry by endocytosis&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
		&lt;tr&gt;
			&lt;td style="border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:none; vertical-align:top; width:208px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;&lt;span style="background-color:white"&gt;&lt;span style="font-family:&amp;quot;Segoe UI&amp;quot;,sans-serif"&gt;&lt;span style="color:#222222"&gt;Rust, M., Lakadamyali, M., Zhang, F.&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;em&gt;&lt;span style="font-family:&amp;quot;Segoe UI&amp;quot;,sans-serif"&gt;&lt;span style="color:#222222"&gt;et al.&lt;/span&gt;&lt;/span&gt;&lt;/em&gt;&amp;nbsp;&lt;span style="background-color:white"&gt;&lt;span style="font-family:&amp;quot;Segoe UI&amp;quot;,sans-serif"&gt;&lt;span style="color:#222222"&gt;Assembly of endocytic machinery around individual influenza viruses during viral entry.&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;em&gt;&lt;span style="font-family:&amp;quot;Segoe UI&amp;quot;,sans-serif"&gt;&lt;span style="color:#222222"&gt;Nat Struct Mol Biol&lt;/span&gt;&lt;/span&gt;&lt;/em&gt;&amp;nbsp;&lt;strong&gt;&lt;span style="font-family:&amp;quot;Segoe UI&amp;quot;,sans-serif"&gt;&lt;span style="color:#222222"&gt;11&lt;/span&gt;&lt;/span&gt;&lt;/strong&gt;&lt;span style="background-color:white"&gt;&lt;span style="font-family:&amp;quot;Segoe UI&amp;quot;,sans-serif"&gt;&lt;span style="color:#222222"&gt;, 567&amp;ndash;573 (2004). https://doi.org/10.1038/nsmb769&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:208px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Real- time fluorescent microscopy&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:208px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Clathrin-mediated and clathrin- and caveolin-independent endocytic pathways used in parallel with similar efficiency&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
		&lt;tr&gt;
			&lt;td style="border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:none; vertical-align:top; width:208px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;De Vries, E. et. al., Dissection of the Influenza A Virus Endocytic Routes Reveals Macropinocytosis as an Alternative Entry Pathway. &lt;em&gt;Plos Pathogens&lt;/em&gt; (2011). &lt;a href="https://doi.org/10.1371/journal.ppat.1001329" style="color:#954f72; text-decoration:underline"&gt;https://doi.org/10.1371/journal.ppat.1001329&lt;/a&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;

			&lt;p&gt;&amp;nbsp;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:208px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Luciferase reporter assay&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:208px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Macropinocytosis is an alternative entry pathway&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
		&lt;tr&gt;
			&lt;td style="border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:none; vertical-align:top; width:208px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Chen, C. and Zhuang, X. Epsin 1 is a cargo- specific adaptor for the clathrin-mediated endocytosis of the influenza virus&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:208px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Colocalization of immunofluorescence&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:208px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;influenza entry via clathrin- mediated pathway&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;

			&lt;p&gt;&amp;nbsp;&lt;/p&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
		&lt;tr&gt;
			&lt;td style="border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:none; vertical-align:top; width:208px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Sieczkarski, S. and Whittaker, G. Influenza Virus Can Enter and Infect Cells in the Absence of Clathrin-Mediated Endocytosis&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:208px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Flow cytommetry&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;td style="border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:208px"&gt;
			&lt;p&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;IAV cell entry via non-clathrin dependent route&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
	&lt;/tbody&gt;
&lt;/table&gt;
</measurement-methodology>
    <evidence-supporting-taxonomic-applicability></evidence-supporting-taxonomic-applicability>
    <organ-term>
      <source-id>UBERON:0000065</source-id>
      <source>UBERON</source>
      <name>respiratory tract</name>
    </organ-term>
    <cell-term>
      <source-id>CL:0002368</source-id>
      <source>CL</source>
      <name>respiratory epithelial cell</name>
    </cell-term>
    <applicability>
      <sex>
        <evidence>High</evidence>
        <sex>Unspecific</sex>
      </sex>
      <life-stage>
        <evidence>Moderate</evidence>
        <life-stage>All life stages</life-stage>
      </life-stage>
      <taxonomy taxonomy-id="41ac8772-df45-49fd-ba3a-5c42b0b282d2">
        <evidence>High</evidence>
      </taxonomy>
      <taxonomy taxonomy-id="8f4011e6-a9ce-44ce-a611-76fbb704214e">
        <evidence>High</evidence>
      </taxonomy>
    </applicability>
    <biological-events>
      <biological-event object-id="105fb1dd-ee2f-4854-83e1-80be76788ebf" process-id="ed250a34-eb69-4771-9bbf-e894a5339614" action-id="8f0da7d5-d681-48be-881c-795d1240704a"/>
      <biological-event object-id="5cde19af-ff0e-4b55-b880-37b8b95ddd03" process-id="a87d153e-5d3a-4269-a4f2-573ceeedee92" action-id="8f0da7d5-d681-48be-881c-795d1240704a"/>
      <biological-event object-id="f12976d8-7982-4f30-943c-acf89185c163" process-id="64f54e8b-9382-4f8d-95be-d8b8ec0753d3" action-id="8f0da7d5-d681-48be-881c-795d1240704a"/>
    </biological-events>
    <references>&lt;ol&gt;
	&lt;li&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;&lt;span style="font-family:Georgia,serif"&gt;&lt;span style="color:#282828"&gt;Dou, D., et. al. Influenza A Virus Cell Entry, Replication, Virion Assembly, and Movement. &lt;em&gt;Front. Immunol&lt;/em&gt;. (2018)&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;a href="https://doi.org/10.3389/fimmu.2018.01581" style="color:#954f72; text-decoration:underline"&gt;&lt;span style="font-family:Georgia,serif"&gt;&lt;span style="color:#282828"&gt;https://doi.org/10.3389/fimmu.2018.01581&lt;/span&gt;&lt;/span&gt;&lt;/a&gt;&lt;/span&gt;&lt;/span&gt;&lt;/li&gt;
	&lt;li&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;Sempere Borau, M. and Stertz, S. Entry of influenza A virus into host cells- recent progress and remaining challenges.&lt;em&gt; Current Opinion in Virology&lt;/em&gt; (2021) &lt;span style="font-size:10.5pt"&gt;&lt;span style="font-family:Arial,sans-serif"&gt;&lt;span style="color:#007398"&gt;&lt;a href="https://doi.org/10.1016/j.coviro.2021.03.001" style="color:#954f72; text-decoration:underline"&gt;https://doi.org/10.1016/j.coviro.2021.03.001&lt;/a&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/li&gt;
	&lt;li&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;&lt;span style="background-color:white"&gt;&lt;span style="font-family:&amp;quot;Segoe UI&amp;quot;,sans-serif"&gt;&lt;span style="color:#222222"&gt;Matlin, K.S., Reggio, H., Helenius, A. &amp;amp; Simons, K. Infectious entry pathway of influenza-virus in a canine kidney-cell line.&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;em&gt;&lt;span style="font-family:&amp;quot;Segoe UI&amp;quot;,sans-serif"&gt;&lt;span style="color:#222222"&gt;J. Cell Biol.&lt;/span&gt;&lt;/span&gt;&lt;/em&gt;&amp;nbsp;&lt;strong&gt;&lt;span style="font-family:&amp;quot;Segoe UI&amp;quot;,sans-serif"&gt;&lt;span style="color:#222222"&gt;91&lt;/span&gt;&lt;/span&gt;&lt;/strong&gt;&lt;span style="background-color:white"&gt;&lt;span style="font-family:&amp;quot;Segoe UI&amp;quot;,sans-serif"&gt;&lt;span style="color:#222222"&gt;, 601&amp;ndash;613 (1981) &lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;span style="font-size:9pt"&gt;&lt;span style="font-family:Roboto"&gt;&lt;a href="https://doi.org/10.1083/jcb.91.3.601" style="color:#954f72; text-decoration:underline"&gt;https://doi.org/10.1083/jcb.91.3.601&lt;/a&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/li&gt;
	&lt;li&gt;&lt;span style="font-size:12pt"&gt;&lt;span style="font-family:Calibri,sans-serif"&gt;De Vries, E. et. al., Dissection of the Influenza A Virus Endocytic Routes Reveals Macropinocytosis as an Alternative Entry Pathway. &lt;em&gt;Plos Pathogens&lt;/em&gt; (2011). &lt;a href="https://doi.org/10.1371/journal.ppat.1001329" style="color:#954f72; text-decoration:underline"&gt;https://doi.org/10.1371/journal.ppat.1001329&lt;/a&gt;&lt;/span&gt;&lt;/span&gt;&lt;/li&gt;
&lt;/ol&gt;
</references>
    <source>AOPWiki</source>
    <creation-timestamp>2023-08-11T12:25:13</creation-timestamp>
    <last-modification-timestamp>2023-08-11T13:03:53</last-modification-timestamp>
  </key-event>
  <key-event-relationship id="2258bcde-3634-4490-b2e2-1cd1cd19f98f">
    <title>
      <upstream-id>68a12074-dfdb-40b1-8bb3-0673e848d59e</upstream-id>
      <downstream-id>0d3fd203-153f-4bea-9af4-467b490730b9</downstream-id>
    </title>
    <description></description>
    <evidence-collection-strategy/>
    <weight-of-evidence>
      <value></value>
      <biological-plausibility></biological-plausibility>
      <emperical-support-linkage></emperical-support-linkage>
      <uncertainties-or-inconsistencies></uncertainties-or-inconsistencies>
    </weight-of-evidence>
    <known-modulating-factors/>
    <quantitative-understanding>
      <description></description>
      <response-response-relationship/>
      <time-scale/>
      <feedforward-feedback-loops/>
    </quantitative-understanding>
    <applicability>
    </applicability>
    <evidence-supporting-taxonomic-applicability></evidence-supporting-taxonomic-applicability>
    <references>#&lt;Reference::ActiveRecord_Associations_CollectionProxy:0x00007b4313122240&gt;</references>
    <source>AOPWiki</source>
    <creation-timestamp>2023-08-11T13:42:23</creation-timestamp>
    <last-modification-timestamp>2023-08-11T13:42:23</last-modification-timestamp>
  </key-event-relationship>
  <aop id="9fa2cb72-6e38-40f7-8532-100233200b77">
    <title>Binding of Influenza A Virus (IAV) to Sialic Acid Glycan Receptor leads to viral infection proliferation</title>
    <short-name>IAV infection proliferation</short-name>
    <point-of-contact>Cataia Ives</point-of-contact>
    <authors></authors>
    <coaches>
    </coaches>
    <external_links>
    </external_links>
    <status>
      <wiki-license>All rights reserved</wiki-license>
    </status>
    <oecd-project/>
    <handbook-version>2.5</handbook-version>
    <abstract></abstract>
    <background>&lt;p&gt;This AOP was developed as a proof of concept for the utility of AOPs to model pathogenesis and provide a testable framework for mitigating factor (MF) and countermeasure evaluation. This AOP outlines early key events (KE) leading to viral propagation and spread.&lt;/p&gt;
</background>
    <development-strategy>&lt;p&gt;This AOP was developed through focused literature searches of peer-reviewed literature and validated in house (data to be published at a later date).&amp;nbsp;&lt;/p&gt;
</development-strategy>
    <molecular-initiating-event key-event-id="68a12074-dfdb-40b1-8bb3-0673e848d59e">
      <evidence-supporting-chemical-initiation></evidence-supporting-chemical-initiation>
    </molecular-initiating-event>
    <key-events>
      <key-event key-event-id="0d3fd203-153f-4bea-9af4-467b490730b9"/>
    </key-events>
    <key-event-relationships>
      <relationship id="2258bcde-3634-4490-b2e2-1cd1cd19f98f">
        <adjacency>adjacent</adjacency>
        <quantitative-understanding-value>Not Specified</quantitative-understanding-value>
        <evidence>High</evidence>
      </relationship>
    </key-event-relationships>
    <applicability>
    </applicability>
    <overall-assessment>
      <description></description>
      <applicability></applicability>
      <key-event-essentiality-summary></key-event-essentiality-summary>
      <weight-of-evidence-summary></weight-of-evidence-summary>
      <known-modulating-factors>&lt;div&gt;
&lt;table class="table table-bordered table-fullwidth"&gt;
	&lt;thead&gt;
		&lt;tr&gt;
			&lt;th&gt;Modulating Factor (MF)&lt;/th&gt;
			&lt;th&gt;Influence or Outcome&lt;/th&gt;
			&lt;th&gt;KER(s) involved&lt;/th&gt;
		&lt;/tr&gt;
	&lt;/thead&gt;
	&lt;tbody&gt;
		&lt;tr&gt;
			&lt;td&gt;&amp;nbsp;&lt;/td&gt;
			&lt;td&gt;&amp;nbsp;&lt;/td&gt;
			&lt;td&gt;&amp;nbsp;&lt;/td&gt;
		&lt;/tr&gt;
	&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
</known-modulating-factors>
      <quantitative-considerations></quantitative-considerations>
    </overall-assessment>
    <potential-applications></potential-applications>
    <aop-stressors>
      <aop-stressor stressor-id="6a92280d-4e84-4afa-962e-0a123988c7fb">
        <evidence>Not Specified</evidence>
      </aop-stressor>
    </aop-stressors>
    <references></references>
    <source>AOPWiki</source>
    <creation-timestamp>2023-07-31T13:32:46</creation-timestamp>
    <last-modification-timestamp>2023-09-25T16:27:15</last-modification-timestamp>
  </aop>
  <vendor-specific id="7d58a45b-b04d-4f19-b429-c47ed2c3a210" name="AopWiki" version="2026-04-03 19:07:05 +0000">
    <biological-process-reference id="368ffa5d-5c24-4cbe-86e5-e79ed66561e8" aop-wiki-id="27031"/>
    <biological-process-reference id="ed250a34-eb69-4771-9bbf-e894a5339614" aop-wiki-id="14306"/>
    <biological-process-reference id="a87d153e-5d3a-4269-a4f2-573ceeedee92" aop-wiki-id="14610"/>
    <biological-process-reference id="64f54e8b-9382-4f8d-95be-d8b8ec0753d3" aop-wiki-id="7505"/>
    <biological-action-reference id="8f0da7d5-d681-48be-881c-795d1240704a" aop-wiki-id="6"/>
    <taxonomy-reference id="41ac8772-df45-49fd-ba3a-5c42b0b282d2" aop-wiki-id="459"/>
    <taxonomy-reference id="fe2ca312-f2ca-4aae-a00f-6f3aef73f635" aop-wiki-id="478"/>
    <taxonomy-reference id="ce60f766-f1e8-48f8-93ac-ee11e11e6960" aop-wiki-id="720912"/>
    <taxonomy-reference id="c67d34d7-f4b3-4b5f-9f8e-319d8a835982" aop-wiki-id="31"/>
    <taxonomy-reference id="8863bf2f-32df-4bb9-8dda-4c1aeae999d8" aop-wiki-id="16"/>
    <taxonomy-reference id="8f4011e6-a9ce-44ce-a611-76fbb704214e" aop-wiki-id="458"/>
    <taxonomy-reference id="8fc8a79e-4202-429a-8e32-89d22bfe012c" aop-wiki-id="6475"/>
    <taxonomy-reference id="13e06393-e325-481b-835b-8ae3eed4a058" aop-wiki-id="6806"/>
    <taxonomy-reference id="53ada860-9f19-4ec1-98c5-a052b618ad47" aop-wiki-id="85"/>
    <taxonomy-reference id="b77cd83c-31d0-4b13-87bf-0f246f90cd30" aop-wiki-id="6350"/>
    <stressor-reference id="6a92280d-4e84-4afa-962e-0a123988c7fb" aop-wiki-id="699"/>
    <biological-object-reference id="105fb1dd-ee2f-4854-83e1-80be76788ebf" aop-wiki-id="52"/>
    <biological-object-reference id="5cde19af-ff0e-4b55-b880-37b8b95ddd03" aop-wiki-id="177523"/>
    <biological-object-reference id="f12976d8-7982-4f30-943c-acf89185c163" aop-wiki-id="40"/>
    <key-event-reference id="68a12074-dfdb-40b1-8bb3-0673e848d59e" aop-wiki-id="2158"/>
    <key-event-reference id="0d3fd203-153f-4bea-9af4-467b490730b9" aop-wiki-id="2159"/>
    <key-event-relationship-reference id="2258bcde-3634-4490-b2e2-1cd1cd19f98f" aop-wiki-id="2978"/>
    <aop-reference id="9fa2cb72-6e38-40f7-8532-100233200b77" aop-wiki-id="506"/>
  </vendor-specific>
</data>
