3tzv

From Proteopedia

(Difference between revisions)

Current revision

Crystal structure of an iNKT TCR in complex with CD1d-lysophosphatidylcholine

Structural highlights

3tzv is a 6 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 3.056Å
Ligands:	, , , , ,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

CD1D_HUMAN Antigen-presenting protein that binds self and non-self glycolipids and presents them to T-cell receptors on natural killer T-cells.^[1]

Publication Abstract from PubMed

Invariant Natural Killer T (iNKT) cells use highly restricted alphabeta T cell receptors (TCRs) to probe the repertoire of lipids presented by CD1d molecules. Here, we describe our studies of lysophosphatidylcholine (LPC) presentation by human CD1d and its recognition by a native, LPC-specific iNKT TCR. Human CD1d presenting LPC adopts an altered conformation from that of CD1d presenting glycolipid antigens, with a shifted alpha1 helix resulting in an open A' pocket. Binding of the iNKT TCR requires a 7-A displacement of the LPC headgroup but stabilizes the CD1d-LPC complex in a closed conformation. The iNKT TCR CDR loop footprint on CD1d-LPC is anchored by the conserved positioning of the CDR3alpha loop, whereas the remaining CDR loops are shifted, due in part to amino-acid differences in the CDR3beta and Jbeta segment used by this iNKT TCR. These findings provide insight into how lysophospholipids are presented by human CD1d molecules and how this complex is recognized by some, but not all, human iNKT cells.

Lysophospholipid presentation by CD1d and recognition by a human Natural Killer T-cell receptor.,Lopez-Sagaseta J, Sibener LV, Kung JE, Gumperz J, Adams EJ EMBO J. 2012 Mar 6;31(8):2047-59. doi: 10.1038/emboj.2012.54. PMID:22395072^[2]

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

References

↑ Chen X, Wang X, Keaton JM, Reddington F, Illarionov PA, Besra GS, Gumperz JE. Distinct endosomal trafficking requirements for presentation of autoantigens and exogenous lipids by human CD1d molecules. J Immunol. 2007 May 15;178(10):6181-90. PMID:17475845
↑ Lopez-Sagaseta J, Sibener LV, Kung JE, Gumperz J, Adams EJ. Lysophospholipid presentation by CD1d and recognition by a human Natural Killer T-cell receptor. EMBO J. 2012 Mar 6;31(8):2047-59. doi: 10.1038/emboj.2012.54. PMID:22395072 doi:10.1038/emboj.2012.54

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/3tzv"

Categories: Homo sapiens | Large Structures | Adams EJ | Lopez-Sagaseta J

@@ Line 3: / Line 3: @@
 <StructureSection load='3tzv' size='340' side='right'caption='[[3tzv]], [[Resolution|resolution]] 3.06&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[3tzv]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3TZV OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3TZV FirstGlance]. <br>
+<table><tr><td colspan='2'>[[3tzv]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3TZV OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3TZV FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=D12:DODECANE'>D12</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=HEX:HEXANE'>HEX</scene>, <scene name='pdbligand=LSC:(4R,7R,18E)-4,7-DIHYDROXY-N,N,N-TRIMETHYL-10-OXO-3,5,9-TRIOXA-4-PHOSPHAHEPTACOS-18-EN-1-AMINIUM+4-OXIDE'>LSC</scene>, <scene name='pdbligand=FUC:ALPHA-L-FUCOSE'>FUC</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3.056&#8491;</td></tr>
-<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[3tyf|3tyf]], [[3u0p|3u0p]]</div></td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=D12:DODECANE'>D12</scene>, <scene name='pdbligand=FUC:ALPHA-L-FUCOSE'>FUC</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=HEX:HEXANE'>HEX</scene>, <scene name='pdbligand=LSC:(4R,7R,18E)-4,7-DIHYDROXY-N,N,N-TRIMETHYL-10-OXO-3,5,9-TRIOXA-4-PHOSPHAHEPTACOS-18-EN-1-AMINIUM+4-OXIDE'>LSC</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr>
-<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CD1D ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN]), B2M, CDABP0092, HDCMA22P ([https://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'>[https://proteopedia.org/fgij/fg.htm?mol=3tzv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3tzv OCA], [https://pdbe.org/3tzv PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3tzv RCSB], [https://www.ebi.ac.uk/pdbsum/3tzv PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3tzv ProSAT]</span></td></tr>
 </table>
-== Disease ==
-[[https://www.uniprot.org/uniprot/B2MG_HUMAN B2MG_HUMAN]] Defects in B2M are the cause of hypercatabolic hypoproteinemia (HYCATHYP) [MIM:[https://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 ==
-[[https://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. [[https://www.uniprot.org/uniprot/CD1D_HUMAN CD1D_HUMAN]] Antigen-presenting protein that binds self and non-self glycolipids and presents them to T-cell receptors on natural killer T-cells.<ref>PMID:17475845</ref>
+[https://www.uniprot.org/uniprot/CD1D_HUMAN CD1D_HUMAN] Antigen-presenting protein that binds self and non-self glycolipids and presents them to T-cell receptors on natural killer T-cells.<ref>PMID:17475845</ref>
 <div style="background-color:#fffaf0;">
 == Publication Abstract from PubMed ==
@@ Line 31: / Line 28: @@
 __TOC__
 </StructureSection>
-[[Category: Human]]
+[[Category: Homo sapiens]]
 [[Category: Large Structures]]
-[[Category: Adams, E J]]
+[[Category: Adams EJ]]
-[[Category: Lopez-Sagaseta, J]]
+[[Category: Lopez-Sagaseta J]]
-[[Category: Antigen recognition]]
-[[Category: Cd1d]]
-[[Category: Cell surface]]
-[[Category: Immune system]]
-[[Category: Immunoglobulin-like]]
-[[Category: Mhc class i-like]]

3tzv

From Proteopedia

Current revision

Crystal structure of an iNKT TCR in complex with CD1d-lysophosphatidylcholine

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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