1w0v

From Proteopedia

(Difference between revisions)

Revision as of 12:18, 6 January 2015

CRYSTAL STRUCTURE OF HLA-B*2705 COMPLEXED WITH THE SELF-PEPTIDE TIS FROM EGF-RESPONSE FACTOR 1

Structural highlights

1w0v is a 3 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:
Related:	1hsa, 1jgd, 1jge, 1k5n, 1of2, 1ogt, 1rgo, 1rog, 1roh, 1roi, 1roj, 1rok, 1rol, 1uxs, 1uxw
Resources:	FirstGlance, OCA, RCSB, PDBsum

Disease

[1B27_HUMAN] Defects in HLA-B are a cause of susceptibility to spondyloarthropathy type 1 (SPDA1) [MIM:106300]. It is a chronic rheumatic disease with multifactorial inheritance. It includes a spectrum of related disorders comprising ankylosing spondylitis, a subset of psoriatic arthritis, reactive arthritis (e.g. Reiter syndrome), arthritis associated with inflammatory bowel disease and undifferentiated spondyloarthropathy. These disorders may occur simultaneously or sequentially in the same patient, probably representing various phenotypic expressions of the same disease. Ankylosing spondylitis is the form of rheumatoid arthritis affecting the spine and is considered the prototype of seronegative spondyloarthropathies. It produces pain and stiffness as a result of inflammation of the sacroiliac, intervertebral, and costovertebral joints. Note=In the Greek Cypriot population, a restricted number of HLA-B27 subtypes are associated with ankylosing spondylitis and other B27-related diseases and an elevated frequency of the B*2702 allele in ankylosing spondylitis patients is identified. The allele B*2707 seems to have a protective role in this population because it was found only in the healthy controls.^[1]

Function

[1B27_HUMAN] Involved in the presentation of foreign antigens to the immune system. [TISD_HUMAN] Probable regulatory protein involved in regulating the response to growth factors. RNA-binding protein that binds to 5'UUAUUUAUUU-3' core sequence. Binds to the class II AU-rich element (ARE) in the 3'-UTR of target mRNAs and promotes their deadenylation and degradation.

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

The F pocket of major histocompatibility complex (in humans HLA) class I molecules accommodates the C terminus of the bound peptide. Residues forming this pocket exhibit considerable polymorphism, and a single difference (Asp116 in HLA-B*2705 and His116 in HLA-B*2709 heavy chains) confers differential association of these two HLA-B27 subtypes to the autoimmune disease ankylosing spondylitis. As peptide presentation by HLA molecules is of central importance for immune responses, we performed thermodynamic (circular dichroism, differential scanning calorimetry, fluorescence polarization) and X-ray crystallographic analyses of both HLA-B27 subtypes complexed with the epidermal growth factor response factor 1-derived self-peptide TIS (RRLPIFSRL) to understand the impact of the Asp116His exchange on peptide display. This peptide is known to be presented in vivo by both subtypes, and as expected for a self-peptide, TIS-reactive cytotoxic T lymphocytes are absent in the respective individuals. The thermodynamic analyses reveal that both HLA-B27:TIS complexes exhibit comparable, relatively high thermostability (Tm approximately 60 degrees C) and undergo multi-step unfolding reactions, with dissociation of the peptide in the first step. As shown by X-ray crystallography, only subtle structural differences between the subtypes were observed regarding the architecture of their F pockets, including the presence of distinct networks of water molecules. However, no consistent structural differences were found between the peptide presentation modes. In contrast to other peptides displayed by the two HLA-subtypes which show either structural or dynamical differences in their peptide presentation modes, the TIS-complexed HLA-B*2705 and HLA-B*2709 subtypes are an example for thermodynamic and structural equivalence, in agreement with functional data.

Thermodynamic and structural equivalence of two HLA-B27 subtypes complexed with a self-peptide.,Hulsmeyer M, Welfle K, Pohlmann T, Misselwitz R, Alexiev U, Welfle H, Saenger W, Uchanska-Ziegler B, Ziegler A J Mol Biol. 2005 Mar 11;346(5):1367-79. Epub 2005 Jan 28. PMID:15713487^[2]

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

References

↑ Varnavidou-Nicolaidou A, Karpasitou K, Georgiou D, Stylianou G, Kokkofitou A, Michalis C, Constantina C, Gregoriadou C, Kyriakides G. HLA-B27 in the Greek Cypriot population: distribution of subtypes in patients with ankylosing spondylitis and other HLA-B27-related diseases. The possible protective role of B*2707. Hum Immunol. 2004 Dec;65(12):1451-4. PMID:15603872 doi:10.1016/j.humimm.2004.08.177
↑ Hulsmeyer M, Welfle K, Pohlmann T, Misselwitz R, Alexiev U, Welfle H, Saenger W, Uchanska-Ziegler B, Ziegler A. Thermodynamic and structural equivalence of two HLA-B27 subtypes complexed with a self-peptide. J Mol Biol. 2005 Mar 11;346(5):1367-79. Epub 2005 Jan 28. PMID:15713487 doi:10.1016/j.jmb.2004.12.047

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1w0v"

@@ Line 3: / Line 3: @@
 == Structural highlights ==
 <table><tr><td colspan='2'>[[1w0v]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1W0V OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1W0V FirstGlance]. <br>
-</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene><br>
+</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene></td></tr>
-<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1hsa|1hsa]], [[1jgd|1jgd]], [[1jge|1jge]], [[1k5n|1k5n]], [[1of2|1of2]], [[1ogt|1ogt]], [[1rgo|1rgo]], [[1rog|1rog]], [[1roh|1roh]], [[1roi|1roi]], [[1roj|1roj]], [[1rok|1rok]], [[1rol|1rol]], [[1uxs|1uxs]], [[1uxw|1uxw]]</td></tr>
+<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1hsa|1hsa]], [[1jgd|1jgd]], [[1jge|1jge]], [[1k5n|1k5n]], [[1of2|1of2]], [[1ogt|1ogt]], [[1rgo|1rgo]], [[1rog|1rog]], [[1roh|1roh]], [[1roi|1roi]], [[1roj|1roj]], [[1rok|1rok]], [[1rol|1rol]], [[1uxs|1uxs]], [[1uxw|1uxw]]</td></tr>
-<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=1w0v FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1w0v OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1w0v RCSB], [http://www.ebi.ac.uk/pdbsum/1w0v PDBsum]</span></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=1w0v FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1w0v OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1w0v RCSB], [http://www.ebi.ac.uk/pdbsum/1w0v PDBsum]</span></td></tr>
-<table>
+</table>
 == Disease ==
 [[http://www.uniprot.org/uniprot/1B27_HUMAN 1B27_HUMAN]] Defects in HLA-B are a cause of susceptibility to spondyloarthropathy type 1 (SPDA1) [MIM:[http://omim.org/entry/106300 106300]]. It is a chronic rheumatic disease with multifactorial inheritance. It includes a spectrum of related disorders comprising ankylosing spondylitis, a subset of psoriatic arthritis, reactive arthritis (e.g. Reiter syndrome), arthritis associated with inflammatory bowel disease and undifferentiated spondyloarthropathy. These disorders may occur simultaneously or sequentially in the same patient, probably representing various phenotypic expressions of the same disease. Ankylosing spondylitis is the form of rheumatoid arthritis affecting the spine and is considered the prototype of seronegative spondyloarthropathies. It produces pain and stiffness as a result of inflammation of the sacroiliac, intervertebral, and costovertebral joints. Note=In the Greek Cypriot population, a restricted number of HLA-B27 subtypes are associated with ankylosing spondylitis and other B27-related diseases and an elevated frequency of the B*2702 allele in ankylosing spondylitis patients is identified. The allele B*2707 seems to have a protective role in this population because it was found only in the healthy controls.<ref>PMID:15603872</ref>
@@ Line 38: / Line 38: @@
 </StructureSection>
 [[Category: Homo sapiens]]
-[[Category: Bettosini, F.]]
+[[Category: Bettosini, F]]
-[[Category: Fiorillo, M T.]]
+[[Category: Fiorillo, M T]]
-[[Category: Hulsmeyer, M.]]
+[[Category: Hulsmeyer, M]]
-[[Category: Saenger, W.]]
+[[Category: Saenger, W]]
-[[Category: Sorrentino, R.]]
+[[Category: Sorrentino, R]]
-[[Category: Uchanska-Ziegler, B.]]
+[[Category: Uchanska-Ziegler, B]]
-[[Category: Ziegler, A.]]
+[[Category: Ziegler, A]]
 [[Category: Hla- b*2705]]
 [[Category: Immune system]]

1w0v

From Proteopedia

Revision as of 12:18, 6 January 2015

CRYSTAL STRUCTURE OF HLA-B*2705 COMPLEXED WITH THE SELF-PEPTIDE TIS FROM EGF-RESPONSE FACTOR 1

Structural highlights

Disease

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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