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5d7j

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Revision as of 10:24, 21 June 2023

Structure of human MR1-5-OP-RU in complex with human MAIT M33.64(Y95alphaF) TCR

Structural highlights

5d7j is a 8 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

HMR1_HUMAN Has antigen presentation function. Involved in the development and expansion of a small population of T-cells expressing an invariant T-cell receptor alpha chain called mucosal-associated invariant T-cells (MAIT). MAIT cells are preferentially located in the gut lamina propria and therefore may be involved in monitoring commensal flora or serve as a distress signal. Expression and MAIT cell recognition seem to be ligand-dependent.^[1]

Publication Abstract from PubMed

A characteristic of mucosal-associated invariant T (MAIT) cells is the expression of TRAV1-2(+) T cell receptors (TCRs) that are activated by riboflavin metabolite-based antigens (Ag) presented by the MHC-I related molecule, MR1. Whether the MR1-restricted T cell repertoire and associated Ag responsiveness extends beyond these cells remains unclear. Here, we describe MR1 autoreactivity and folate-derivative reactivity in a discrete subset of TRAV1-2(+) MAIT cells. This recognition was attributable to CDR3beta loop-mediated effects within a consensus TRAV1-2(+) TCR-MR1-Ag footprint. Furthermore, we have demonstrated differential folate- and riboflavin-derivative reactivity by a diverse population of "atypical" TRAV1-2(-) MR1-restricted T cells. We have shown that TRAV1-2(-) T cells are phenotypically heterogeneous and largely distinct from TRAV1-2(+) MAIT cells. A TRAV1-2(-) TCR docks more centrally on MR1, thereby adopting a markedly different molecular footprint to the TRAV1-2(+) TCR. Accordingly, diversity within the MR1-restricted T cell repertoire leads to differing MR1-restricted Ag specificity.

Diversity of T Cells Restricted by the MHC Class I-Related Molecule MR1 Facilitates Differential Antigen Recognition.,Gherardin NA, Keller AN, Woolley RE, Le Nours J, Ritchie DS, Neeson PJ, Birkinshaw RW, Eckle SB, Waddington JN, Liu L, Fairlie DP, Uldrich AP, Pellicci DG, McCluskey J, Godfrey DI, Rossjohn J Immunity. 2016 Jan 19;44(1):32-45. doi: 10.1016/j.immuni.2015.12.005. Epub 2016, Jan 12. PMID:26795251^[2]

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

References

↑ Miley MJ, Truscott SM, Yu YY, Gilfillan S, Fremont DH, Hansen TH, Lybarger L. Biochemical features of the MHC-related protein 1 consistent with an immunological function. J Immunol. 2003 Jun 15;170(12):6090-8. PMID:12794138
↑ Gherardin NA, Keller AN, Woolley RE, Le Nours J, Ritchie DS, Neeson PJ, Birkinshaw RW, Eckle SB, Waddington JN, Liu L, Fairlie DP, Uldrich AP, Pellicci DG, McCluskey J, Godfrey DI, Rossjohn J. Diversity of T Cells Restricted by the MHC Class I-Related Molecule MR1 Facilitates Differential Antigen Recognition. Immunity. 2016 Jan 19;44(1):32-45. doi: 10.1016/j.immuni.2015.12.005. Epub 2016, Jan 12. PMID:26795251 doi:http://dx.doi.org/10.1016/j.immuni.2015.12.005

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/5d7j"

Categories: Homo sapiens | Large Structures | Keller AN | Rossjohn J | Woolley RE

@@ Line 3: / Line 3: @@
 <StructureSection load='5d7j' size='340' side='right'caption='[[5d7j]], [[Resolution|resolution]] 1.97&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[5d7j]] is a 8 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=5D7J OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5D7J FirstGlance]. <br>
+<table><tr><td colspan='2'>[[5d7j]] is a 8 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=5D7J OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5D7J FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=2LJ:1-DEOXY-1-({2,6-DIOXO-5-[(E)-(2-OXOPROPYLIDENE)AMINO]-1,2,3,6-TETRAHYDROPYRIMIDIN-4-YL}AMINO)-D-RIBITOL'>2LJ</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene></td></tr>
+</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=2LJ:1-DEOXY-1-({2,6-DIOXO-5-[(E)-(2-OXOPROPYLIDENE)AMINO]-1,2,3,6-TETRAHYDROPYRIMIDIN-4-YL}AMINO)-D-RIBITOL'>2LJ</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene></td></tr>
-<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[5d7k|5d7k]], [[5d5m|5d5m]], [[5d7i|5d7i]], [[5d7l|5d7l]]</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=5d7j FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5d7j OCA], [https://pdbe.org/5d7j PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5d7j RCSB], [https://www.ebi.ac.uk/pdbsum/5d7j PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5d7j ProSAT]</span></td></tr>
-<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">TRAV/TRAV ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN]), TRBV/TRBC ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN]), MR1 ([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://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5d7j FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5d7j OCA], [http://pdbe.org/5d7j PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5d7j RCSB], [http://www.ebi.ac.uk/pdbsum/5d7j PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5d7j 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/B2MG_HUMAN B2MG_HUMAN]] Component of the class I major histocompatibility complex (MHC). Involved in the presentation of peptide antigens to the immune system. [[http://www.uniprot.org/uniprot/HMR1_HUMAN HMR1_HUMAN]] Has antigen presentation function. Involved in the development and expansion of a small population of T-cells expressing an invariant T-cell receptor alpha chain called mucosal-associated invariant T-cells (MAIT). MAIT cells are preferentially located in the gut lamina propria and therefore may be involved in monitoring commensal flora or serve as a distress signal. Expression and MAIT cell recognition seem to be ligand-dependent.<ref>PMID:12794138</ref>
+[https://www.uniprot.org/uniprot/HMR1_HUMAN HMR1_HUMAN] Has antigen presentation function. Involved in the development and expansion of a small population of T-cells expressing an invariant T-cell receptor alpha chain called mucosal-associated invariant T-cells (MAIT). MAIT cells are preferentially located in the gut lamina propria and therefore may be involved in monitoring commensal flora or serve as a distress signal. Expression and MAIT cell recognition seem to be ligand-dependent.<ref>PMID:12794138</ref>
 <div style="background-color:#fffaf0;">
 == Publication Abstract from PubMed ==
@@ Line 29: / Line 25: @@
 __TOC__
 </StructureSection>
-[[Category: Human]]
+[[Category: Homo sapiens]]
 [[Category: Large Structures]]
-[[Category: Keller, A N]]
+[[Category: Keller AN]]
-[[Category: Rossjohn, J]]
+[[Category: Rossjohn J]]
-[[Category: Woolley, R E]]
+[[Category: Woolley RE]]
-[[Category: Antigen]]
-[[Category: Immune system]]
-[[Category: Receptor]]

5d7j

From Proteopedia

Revision as of 10:24, 21 June 2023

Structure of human MR1-5-OP-RU in complex with human MAIT M33.64(Y95alphaF) TCR

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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