1a4k: Difference between revisions

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{{STRUCTURE_1a4k|  PDB=1a4k  |  SCENE=  }}
==DIELS ALDER CATALYTIC ANTIBODY WITH TRANSITION STATE ANALOGUE==
===DIELS ALDER CATALYTIC ANTIBODY WITH TRANSITION STATE ANALOGUE===
<StructureSection load='1a4k' size='340' side='right' caption='[[1a4k]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
{{ABSTRACT_PUBMED_9506942}}
== Structural highlights ==
<table><tr><td colspan='2'>[[1a4k]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1A4K OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1A4K FirstGlance]. <br>
</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CD:CADMIUM+ION'>CD</scene>, <scene name='pdbligand=FRA:[4-(4-ACETYLAMINO-PHENYL)-3,5-DIOXO-4-AZA-TRICYCLO[5.2.2.0+2,6]UNDEC-1-YLCARBAMOYLOXY]-ACETIC+ACID'>FRA</scene><br>
<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1a4k FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1a4k OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1a4k RCSB], [http://www.ebi.ac.uk/pdbsum/1a4k PDBsum]</span></td></tr>
<table>
== Disease ==
[[http://www.uniprot.org/uniprot/IGKC_HUMAN IGKC_HUMAN]] Defects in IGKC are the cause of immunoglobulin kappa light chain deficiency (IGKCD) [MIM:[http://omim.org/entry/614102 614102]]. IGKCD is a disease characterized by the complete absence of immunoglobulin kappa chains.<ref>PMID:3931219</ref> 
== Function ==


==Disease==
== Evolutionary Conservation ==
[[http://www.uniprot.org/uniprot/IGKC_HUMAN IGKC_HUMAN]] Defects in IGKC are the cause of immunoglobulin kappa light chain deficiency (IGKCD) [MIM:[http://omim.org/entry/614102 614102]]. IGKCD is a disease characterized by the complete absence of immunoglobulin kappa chains.<ref>PMID:3931219</ref>
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/a4/1a4k_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The three-dimensional structure of an antibody (39-A11) that catalyzes a Diels-Alder reaction has been determined. The structure suggests that the antibody catalyzes this pericyclic reaction through a combination of packing and hydrogen-bonding interactions that control the relative geometries of the bound substrates and electronic distribution in the dienophile. A single somatic mutation, serine-91 of the light chain to valine, is largely responsible for the increase in affinity and catalytic activity of the affinity-matured antibody. Structural and functional studies of the germ-line precursor suggest that 39-A11 and related antibodies derive from a family of germ-line genes that have been selected throughout evolution for the ability of the encoded proteins to form a polyspecific combining site. Germ line-encoded antibodies of this type, which can rapidly evolve into high-affinity receptors for a broad range of structures, may help to expand the binding potential associated with the structural diversity of the primary antibody repertoire.


==About this Structure==
Immunological origins of binding and catalysis in a Diels-Alderase antibody.,Romesberg FE, Spiller B, Schultz PG, Stevens RC Science. 1998 Mar 20;279(5358):1929-33. PMID:9506942<ref>PMID:9506942</ref>
[[1a4k]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1A4K OCA].
 
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>


==See Also==
==See Also==
*[[Antibody|Antibody]]
*[[Monoclonal Antibody|Monoclonal Antibody]]
 
== References ==
==Reference==
<references/>
<ref group="xtra">PMID:009506942</ref><references group="xtra"/><references/>
__TOC__
</StructureSection>
[[Category: Mus musculus]]
[[Category: Mus musculus]]
[[Category: Romesburg, F E.]]
[[Category: Romesburg, F E.]]
Retrieved from "https://proteopedia.org/1a4k"