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4yk4

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Revision as of 10:01, 10 March 2017

Human antibody 641 I-9 in complex with influenza hemagglutinin H1 Solomon Islands/03/2006

Structural highlights

4yk4 is a 6 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Related:	4yjz
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[A7UPX0_9INFA] Binds to sialic acid-containing receptors on the cell surface, bringing about the attachment of the virus particle to the cell. This attachment induces virion internalization of about two third of the virus particles through clathrin-dependent endocytosis and about one third through a clathrin- and caveolin-independent pathway. Plays a major role in the determination of host range restriction and virulence. Class I viral fusion protein. Responsible for penetration of the virus into the cell cytoplasm by mediating the fusion of the membrane of the endocytosed virus particle with the endosomal membrane. Low pH in endosomes induces an irreversible conformational change in HA2, releasing the fusion hydrophobic peptide. Several trimers are required to form a competent fusion pore.[RuleBase:RU003324][SAAS:SAAS00145386]

Publication Abstract from PubMed

Vaccines for rapidly evolving pathogens will confer lasting immunity if they elicit antibodies recognizing conserved epitopes, such as a receptor-binding site (RBS). From characteristics of an influenza-virus RBS-directed antibody, we devised a signature motif to search for similar antibodies. We identified, from three vaccinees, over 100 candidates encoded by 11 different VH genes. Crystal structures show that antibodies in this class engage the hemagglutinin RBS and mimic binding of the receptor, sialic acid, by supplying a critical dipeptide on their projecting, heavy-chain third complementarity determining region. They share contacts with conserved, receptor-binding residues but contact different residues on the RBS periphery, limiting the likelihood of viral escape when several such antibodies are present. These data show that related modes of RBS recognition can arise from different germline origins and mature through diverse affinity maturation pathways. Immunogens focused on an RBS-directed response will thus have a broad range of B cell targets.

Viral receptor-binding site antibodies with diverse germline origins.,Schmidt AG, Therkelsen MD, Stewart S, Kepler TB, Liao HX, Moody MA, Haynes BF, Harrison SC Cell. 2015 May 21;161(5):1026-34. doi: 10.1016/j.cell.2015.04.028. Epub 2015 May , 7. PMID:25959776^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Schmidt AG, Therkelsen MD, Stewart S, Kepler TB, Liao HX, Moody MA, Haynes BF, Harrison SC. Viral receptor-binding site antibodies with diverse germline origins. Cell. 2015 May 21;161(5):1026-34. doi: 10.1016/j.cell.2015.04.028. Epub 2015 May , 7. PMID:25959776 doi:http://dx.doi.org/10.1016/j.cell.2015.04.028

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 See Also
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/4yk4"

@@ Line 1: / Line 1: @@
 ==Human antibody 641 I-9 in complex with influenza hemagglutinin H1 Solomon Islands/03/2006==
 <StructureSection load='4yk4' size='340' side='right' caption='[[4yk4]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
@@ Line 5: / Line 6: @@
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr>
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4yjz|4yjz]]</td></tr>
-<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4yk4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4yk4 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4yk4 RCSB], [http://www.ebi.ac.uk/pdbsum/4yk4 PDBsum]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4yk4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4yk4 OCA], [http://pdbe.org/4yk4 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4yk4 RCSB], [http://www.ebi.ac.uk/pdbsum/4yk4 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4yk4 ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 17: / Line 18: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 4yk4" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[3D structures of antibody|3D structures of antibody]]
 == References ==
 <references/>

4yk4

From Proteopedia

Revision as of 10:01, 10 March 2017

Human antibody 641 I-9 in complex with influenza hemagglutinin H1 Solomon Islands/03/2006

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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