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3bze

From Proteopedia

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The human non-classical major histocompatibility complex molecule HLA-E

Structural highlights

3bze is a 12 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 2.5Å
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

HLAE_HUMAN Preferably binds to a peptide derived from the signal sequence of most HLA-A, -B, -C and -G molecules.

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

Human leukocyte antigen (HLA)-E is a non-classical major histocompatibility complex class I molecule that binds peptides derived from the leader sequences of other HLA class I molecules. Natural killer cell recognition of these HLA-E molecules, via the CD94-NKG2 natural killer family, represents a central innate mechanism for monitoring major histocompatibility complex expression levels within a cell. The leader sequence-derived peptides bound to HLA-E exhibit very limited polymorphism, yet subtle differences affect the recognition of HLA-E by the CD94-NKG2 receptors. To better understand the basis for this peptide-specific recognition, we determined the structure of HLA-E in complex with two leader peptides, namely, HLA-Cw*07 (VMAPRALLL), which is poorly recognised by CD94-NKG2 receptors, and HLA-G*01 (VMAPRTLFL), a high-affinity ligand of CD94-NKG2 receptors. A comparison of these structures, both of which were determined to 2.5-A resolution, revealed that allotypic variations in the bound leader sequences do not result in conformational changes in the HLA-E heavy chain, although subtle changes in the conformation of the peptide within the binding groove of HLA-E were evident. Accordingly, our data indicate that the CD94-NKG2 receptors interact with HLA-E in a manner that maximises the ability of the receptors to discriminate between subtle changes in both the sequence and conformation of peptides bound to HLA-E.

Subtle changes in peptide conformation profoundly affect recognition of the non-classical MHC class I molecule HLA-E by the CD94-NKG2 natural killer cell receptors.,Hoare HL, Sullivan LC, Clements CS, Ely LK, Beddoe T, Henderson KN, Lin J, Reid HH, Brooks AG, Rossjohn J J Mol Biol. 2008 Apr 11;377(5):1297-303. Epub 2008 Feb 12. PMID:18339401^[1]

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

References

↑ Hoare HL, Sullivan LC, Clements CS, Ely LK, Beddoe T, Henderson KN, Lin J, Reid HH, Brooks AG, Rossjohn J. Subtle changes in peptide conformation profoundly affect recognition of the non-classical MHC class I molecule HLA-E by the CD94-NKG2 natural killer cell receptors. J Mol Biol. 2008 Apr 11;377(5):1297-303. Epub 2008 Feb 12. PMID:18339401 doi:http://dx.doi.org/10.1016/j.jmb.2008.01.098

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 See Also
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/3bze"

@@ Line 1: / Line 1: @@
 ==The human non-classical major histocompatibility complex molecule HLA-E==
-<StructureSection load='3bze' size='340' side='right' caption='[[3bze]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
+<StructureSection load='3bze' size='340' side='right'caption='[[3bze]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[3bze]] is a 12 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=3BZE OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3BZE FirstGlance]. <br>
+<table><tr><td colspan='2'>[[3bze]] is a 12 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=3BZE OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3BZE FirstGlance]. <br>
-</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3bzf|3bzf]]</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]] 2.5&#8491;</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=3bze FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3bze OCA], [http://pdbe.org/3bze PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3bze RCSB], [http://www.ebi.ac.uk/pdbsum/3bze PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3bze ProSAT]</span></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=3bze FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3bze OCA], [https://pdbe.org/3bze PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3bze RCSB], [https://www.ebi.ac.uk/pdbsum/3bze PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3bze 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/HLAE_HUMAN HLAE_HUMAN]] Preferably binds to a peptide derived from the signal sequence of most HLA-A, -B, -C and -G molecules. [[http://www.uniprot.org/uniprot/HLAG_HUMAN HLAG_HUMAN]] Involved in the presentation of foreign antigens to the immune system. Plays a role in maternal tolerance of the fetus by mediating protection from the deleterious effects of natural killer cells, cytotoxic T-lymphocytes, macrophages and mononuclear cells. [[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.
+[https://www.uniprot.org/uniprot/HLAE_HUMAN HLAE_HUMAN] Preferably binds to a peptide derived from the signal sequence of most HLA-A, -B, -C and -G molecules.
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 32: / Line 30: @@
 ==See Also==
-*[[Beta-2 microglobulin|Beta-2 microglobulin]]
+*[[Beta-2 microglobulin 3D structures|Beta-2 microglobulin 3D structures]]
-*[[Major histocompatibility complex|Major histocompatibility complex]]
+*[[MHC 3D structures|MHC 3D structures]]
+*[[MHC I 3D structures|MHC I 3D structures]]
 == References ==
 <references/>
 __TOC__
 </StructureSection>
-[[Category: Human]]
+[[Category: Homo sapiens]]
-[[Category: Beddoe, T]]
+[[Category: Large Structures]]
-[[Category: Brooks, A G]]
+[[Category: Beddoe T]]
-[[Category: Clements, C S]]
+[[Category: Brooks AG]]
-[[Category: Ely, L K]]
+[[Category: Clements CS]]
-[[Category: Henderson, K N]]
+[[Category: Ely LK]]
-[[Category: Hoare, H L]]
+[[Category: Henderson KN]]
-[[Category: Lin, J]]
+[[Category: Hoare HL]]
-[[Category: Reid, H H]]
+[[Category: Lin J]]
-[[Category: Rossjohn, J]]
+[[Category: Reid HH]]
-[[Category: Sullivan, L C]]
+[[Category: Rossjohn J]]
-[[Category: Disease mutation]]
+[[Category: Sullivan LC]]
-[[Category: Glycation]]
-[[Category: Glycoprotein]]
-[[Category: Immune response]]
-[[Category: Immune system]]
-[[Category: Immunoglobulin domain]]
-[[Category: Mhc fold]]
-[[Category: Mhc i]]
-[[Category: Pyrrolidone carboxylic acid]]
-[[Category: Secreted]]
-[[Category: Transmembrane]]

3bze

From Proteopedia

Current revision

The human non-classical major histocompatibility complex molecule HLA-E

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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