View source for 1ejo


==FAB FRAGMENT OF NEUTRALISING MONOCLONAL ANTIBODY 4C4 COMPLEXED WITH G-H LOOP FROM FMDV.==
<StructureSection load='1ejo' size='340' side='right'caption='[[1ejo]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1ejo]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Foot-and-mouth_disease_virus_C1 Foot-and-mouth disease virus C1] and [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1EJO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1EJO FirstGlance]. <br>
</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1ejo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ejo OCA], [https://pdbe.org/1ejo PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1ejo RCSB], [https://www.ebi.ac.uk/pdbsum/1ejo PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1ejo ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/KV3A8_MOUSE KV3A8_MOUSE] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The crystal structure of a 15 amino acid synthetic peptide, corresponding to the sequence of the major antigenic site A (G-H loop of VP1) from a multiple variant of foot-and-mouth disease virus (FMDV), has been determined at 2.3 A resolution. The variant peptide includes four amino acid substitutions in the loop relative to the previously studied peptide representing FMDV C-S8c1 and corresponds to the loop of a natural FMDV isolate of subtype C(1). The peptide was complexed with the Fab fragment of the neutralizing monoclonal antibody 4C4. The peptide adopts a compact fold with a nearly cyclic conformation and a disposition of the receptor-recognition motif Arg-Gly-Asp that is closely related to the previously determined structure for the viral loop, as part of the virion, and for unsubstituted synthetic peptide antigen bound to neutralizing antibodies. New structural findings include the observation that well-defined solvent molecules appear to play a major role in stabilizing the conformation of the peptide and its interactions with the antibody. Structural results are supported by molecular-dynamic simulations. The multiply substituted peptide developed compensatory mechanisms to bind the antibody with a conformation very similar to that of its unsubstituted counterpart. One water molecule, which for steric reasons could not occupy the same position in the unsubstituted antigen, establishes hydrogen bonds with three peptide amino acids. The constancy of the structure of an antigenic domain despite multiple amino acid substitutions has implications for vaccine design.

A multiply substituted G-H loop from foot-and-mouth disease virus in complex with a neutralizing antibody: a role for water molecules.,Ochoa WF, Kalko SG, Mateu MG, Gomes P, Andreu D, Domingo E, Fita I, Verdaguer N J Gen Virol. 2000 Jun;81(Pt 6):1495-505. PMID:10811933<ref>PMID:10811933</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1ejo" style="background-color:#fffaf0;"></div>

==See Also==
*[[Monoclonal Antibodies 3D structures|Monoclonal Antibodies 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Foot-and-mouth disease virus C1]]
[[Category: Large Structures]]
[[Category: Mus musculus]]
[[Category: Fita I]]
[[Category: Gomes P]]
[[Category: Kalko SG]]
[[Category: Ochoa WF]]
[[Category: Verdaguer N]]