View source for 3t77


==S25-2- A(2-4)KDO disaccharide complex==
<StructureSection load='3t77' size='340' side='right'caption='[[3t77]], [[Resolution|resolution]] 1.74&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3t77]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Lk3_transgenic_mice Lk3 transgenic mice]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=1q9t 1q9t]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3T77 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3T77 FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene>, <scene name='pdbligand=KDA:(3-DEOXY-D-MANNO-OCT-2-ULOSONIC+ACID)-2-O-ALLYL'>KDA</scene>, <scene name='pdbligand=KDO:3-DEOXY-D-MANNO-OCT-2-ULOSONIC+ACID'>KDO</scene></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=3t77 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3t77 OCA], [https://pdbe.org/3t77 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3t77 RCSB], [https://www.ebi.ac.uk/pdbsum/3t77 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3t77 ProSAT]</span></td></tr>
</table>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
High-resolution structures reveal how a germline antibody can recognize a range of clinically relevant carbohydrate epitopes. The germline response to a carbohydrate immunogen can be critical to survivability, with selection for antibody gene segments that both confer protection against common pathogens and retain the flexibility to adapt to new disease organisms. We show here that antibody S25-2 binds several distinct inner-core epitopes of bacterial lipopolysaccharides (LPSs) by linking an inherited monosaccharide residue binding site with a subset of complementarity-determining regions (CDRs) of limited flexibility positioned to recognize the remainder of an array of different epitopes. This strategy allows germline antibodies to adapt to different epitopes while minimizing entropic penalties associated with the immobilization of labile CDRs upon binding of antigen, and provides insight into the link between the genetic origin of individual CDRs and their respective roles in antigen recognition.

Germline antibody recognition of distinct carbohydrate epitopes.,Nguyen HP, Seto NO, MacKenzie CR, Brade L, Kosma P, Brade H, Evans SV Nat Struct Biol. 2003 Dec;10(12):1019-25. Epub 2003 Nov 16. PMID:14625588<ref>PMID:14625588</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 3t77" style="background-color:#fffaf0;"></div>

==See Also==
*[[Antibody 3D structures|Antibody 3D structures]]
*[[3D structures of non-human antibody|3D structures of non-human antibody]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Lk3 transgenic mice]]
[[Category: Brade, H]]
[[Category: Brade, L]]
[[Category: Evans, S V]]
[[Category: Kosma, P]]
[[Category: Mackenzie, C R]]
[[Category: Nguyen, H P]]
[[Category: Seto, N O]]
[[Category: Anti-carbohydrate]]
[[Category: Anti-lp]]
[[Category: Antibody]]
[[Category: Antigen-binding fragment]]
[[Category: Fab]]
[[Category: Immune system]]
[[Category: Immunoglobulin]]
[[Category: Kdo]]