This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.

Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.


6eqb

From Proteopedia

(Difference between revisions)
Jump to: navigation, search
m (Protected "6eqb" [edit=sysop:move=sysop])
Current revision (05:57, 22 April 2020) (edit) (undo)
 
(One intermediate revision not shown.)
Line 1: Line 1:
-
'''Unreleased structure'''
 
-
The entry 6eqb is ON HOLD
+
==HLA class I histocompatibility antigen==
 +
<StructureSection load='6eqb' size='340' side='right'caption='[[6eqb]], [[Resolution|resolution]] 2.81&Aring;' scene=''>
 +
== Structural highlights ==
 +
<table><tr><td colspan='2'>[[6eqb]] is a 5 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6EQB OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=6EQB FirstGlance]. <br>
 +
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=EPE:4-(2-HYDROXYETHYL)-1-PIPERAZINE+ETHANESULFONIC+ACID'>EPE</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
 +
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3hg1|3hg1]]</td></tr>
 +
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">HLA-A, HLAA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN]), B2M, CDABP0092, HDCMA22P ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
 +
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=6eqb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6eqb OCA], [http://pdbe.org/6eqb PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6eqb RCSB], [http://www.ebi.ac.uk/pdbsum/6eqb PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6eqb ProSAT]</span></td></tr>
 +
</table>
 +
== Disease ==
 +
[[http://www.uniprot.org/uniprot/B2MG_HUMAN B2MG_HUMAN]] Defects in B2M are the cause of hypercatabolic hypoproteinemia (HYCATHYP) [MIM:[http://omim.org/entry/241600 241600]]. Affected individuals show marked reduction in serum concentrations of immunoglobulin and albumin, probably due to rapid degradation.<ref>PMID:16549777</ref> Note=Beta-2-microglobulin may adopt the fibrillar configuration of amyloid in certain pathologic states. The capacity to assemble into amyloid fibrils is concentration dependent. Persistently high beta(2)-microglobulin serum levels lead to amyloidosis in patients on long-term hemodialysis.<ref>PMID:3532124</ref> <ref>PMID:1336137</ref> <ref>PMID:7554280</ref> <ref>PMID:4586824</ref> <ref>PMID:8084451</ref> <ref>PMID:12119416</ref> <ref>PMID:12796775</ref> <ref>PMID:16901902</ref> <ref>PMID:16491088</ref> <ref>PMID:17646174</ref> <ref>PMID:18835253</ref> <ref>PMID:18395224</ref> <ref>PMID:19284997</ref>
 +
== Function ==
 +
[[http://www.uniprot.org/uniprot/1A02_HUMAN 1A02_HUMAN]] Involved in the presentation of foreign antigens to the immune system. [[http://www.uniprot.org/uniprot/B2MG_HUMAN B2MG_HUMAN]] Component of the class I major histocompatibility complex (MHC). Involved in the presentation of peptide antigens to the immune system.
 +
<div style="background-color:#fffaf0;">
 +
== Publication Abstract from PubMed ==
 +
The HLA-A*02:01-restricted decapeptide EAAGIGILTV, derived from melanoma antigen recognized by T-cells-1 (MART-1) protein, represents one of the best-studied tumor associated T-cell epitopes, but clinical results targeting this peptide have been disappointing. This limitation may reflect the dominance of the nonapeptide, AAGIGILTV, at the melanoma cell surface. The decapeptide and nonapeptide are presented in distinct conformations by HLA-A*02:01 and TCRs from clinically relevant T-cell clones recognize the nonapeptide poorly. Here, we studied the MEL5 TCR that potently recognizes the nonapeptide. The structure of the MEL5-HLA-A*02:01-AAGIGILTV complex revealed an induced fit mechanism of antigen recognition involving altered peptide-MHC anchoring. This "flexing" at the TCR-peptide-MHC interface to accommodate the peptide antigen explains previously observed incongruences in this well-studied system and has important implications for future therapeutic approaches. Finally, this study expands upon the mechanisms by which molecular plasticity can influence antigen recognition by T cells.
-
Authors:
+
TCR-induced alteration of primary MHC peptide anchor residue.,Madura F, Rizkallah PJ, Legut M, Holland CJ, Fuller A, Bulek A, Schauenburg AJ, Trimby A, Hopkins JR, Wells SA, Godkin A, Miles JJ, Sami M, Li Y, Liddy N, Jakobsen BK, Loveridge EJ, Cole DK, Sewell AK Eur J Immunol. 2019 Jul;49(7):1052-1066. doi: 10.1002/eji.201948085. Epub 2019, May 27. PMID:31091334<ref>PMID:31091334</ref>
-
Description:
+
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
-
[[Category: Unreleased Structures]]
+
</div>
 +
<div class="pdbe-citations 6eqb" style="background-color:#fffaf0;"></div>
 +
 
 +
==See Also==
 +
*[[Beta-2 microglobulin 3D structures|Beta-2 microglobulin 3D structures]]
 +
== References ==
 +
<references/>
 +
__TOC__
 +
</StructureSection>
 +
[[Category: Human]]
 +
[[Category: Large Structures]]
 +
[[Category: Cole, D K]]
 +
[[Category: Rizkallah, P J]]
 +
[[Category: 3d structure]]
 +
[[Category: Immune system]]
 +
[[Category: Melanoma]]
 +
[[Category: Mhc]]
 +
[[Category: Tcr]]
 +
[[Category: Vaccine]]

Current revision

HLA class I histocompatibility antigen

PDB ID 6eqb

Drag the structure with the mouse to rotate

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/6eqb"
Personal tools