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| | <StructureSection load='3pwu' size='340' side='right'caption='[[3pwu]], [[Resolution|resolution]] 1.90Å' scene=''> | | <StructureSection load='3pwu' size='340' side='right'caption='[[3pwu]], [[Resolution|resolution]] 1.90Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[3pwu]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Bovin Bovin] and [https://en.wikipedia.org/wiki/Lk3_transgenic_mice Lk3 transgenic mice]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3PWU OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3PWU FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[3pwu]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Bos_taurus Bos taurus], [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus] and [https://en.wikipedia.org/wiki/Rinderpest_virus_(strain_RBOK) Rinderpest virus (strain RBOK)]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3PWU OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3PWU FirstGlance]. <br> |
| - | </td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">LA-A11 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9913 BOVIN]), B2m ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10090 LK3 transgenic mice])</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]] 1.899Å</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=3pwu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3pwu OCA], [https://pdbe.org/3pwu PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3pwu RCSB], [https://www.ebi.ac.uk/pdbsum/3pwu PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3pwu 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=3pwu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3pwu OCA], [https://pdbe.org/3pwu PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3pwu RCSB], [https://www.ebi.ac.uk/pdbsum/3pwu PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3pwu ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[https://www.uniprot.org/uniprot/Q95477_BOVIN Q95477_BOVIN]] Involved in the presentation of foreign antigens to the immune system.[SAAS:SAAS00004076] [[https://www.uniprot.org/uniprot/HEMA_RINDR HEMA_RINDR]] Attaches the virus to cell receptors and thereby initiating infection. Binding of H protein to the receptor induces a conformational change that allows the F protein to trigger virion/cell membranes fusion (By similarity). Down-regulates human MCP/CD46 cell surface expression.<ref>PMID:9811778</ref> [[https://www.uniprot.org/uniprot/B2MG_MOUSE B2MG_MOUSE]] 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/Q95477_BOVIN Q95477_BOVIN] Involved in the presentation of foreign antigens to the immune system.[SAAS:SAAS00004076] |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Bovin]] | + | [[Category: Bos taurus]] |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Lk3 transgenic mice]] | + | [[Category: Mus musculus]] |
| - | [[Category: Gao, F]] | + | [[Category: Gao F]] |
| - | [[Category: Gao, G F]] | + | [[Category: Gao GF]] |
| - | [[Category: Li, Q]] | + | [[Category: Li Q]] |
| - | [[Category: Li, X]] | + | [[Category: Li X]] |
| - | [[Category: Liu, J]] | + | [[Category: Liu J]] |
| - | [[Category: Qi, J]] | + | [[Category: Qi J]] |
| - | [[Category: Xia, C]] | + | [[Category: Xia C]] |
| - | [[Category: Zhang, N]] | + | [[Category: Zhang N]] |
| - | [[Category: Immune system]]
| + | |
| - | [[Category: Immunodominant epitope cattle]]
| + | |
| - | [[Category: Mhc bola conformation]]
| + | |
| Structural highlights
Function
Q95477_BOVIN Involved in the presentation of foreign antigens to the immune system.[SAAS:SAAS00004076]
Publication Abstract from PubMed
The presentation of viral peptide epitopes to host cytotoxic T lymphocytes (CTLs) is crucial for adaptive cellular immunity to clear the virus infection, especially for some chronic viral infections. Indeed, hosts have developed effective strategies to achieve this goal. The ideal scenario would be that the peptide epitopes stimulate a broad spectrum of CTL responses with diversified T-cell receptor (TCR) usage (the TCR repertoire). It is believed that a diversified TCR repertoire requires a "featured" peptide to be presented by the host major histocompatibility complex (MHC). A featured peptide can be processed and presented in a number of ways. Here, using the X-ray diffraction method, the crystal structures of an antigenic peptide derived from rinderpest virus presented by bovine MHC class I N*01801 (BoLA-A11) have been solved, and two distinct conformations of the presented peptide are clearly displayed. A detailed analysis of the structure and comparative sequences revealed that the polymorphic amino acid isoleucine 73 (Ile73) is extremely flexible, allowing the MHC groove to adopt different conformations to accommodate the rinderpest virus peptide. This makes the peptide more featured by exposing different amino acids for T-cell recognition. The crystal structures also demonstrated that the N*01801 molecule has an unusually large A pocket, resulting in the special conformation of the P1 residue at the N terminus of the peptide. We propose that this strategy of host peptide presentation might be beneficial for creating a diversified TCR repertoire, which is important for a more-effective CTL response.
Two distinct conformations of a rinderpest virus epitope presented by bovine major histocompatibility complex class I N*01801: a host strategy to present featured peptides.,Li X, Liu J, Qi J, Gao F, Li Q, Li X, Zhang N, Xia C, Gao GF J Virol. 2011 Jun;85(12):6038-48. Epub 2011 Mar 30. PMID:21450819[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Li X, Liu J, Qi J, Gao F, Li Q, Li X, Zhang N, Xia C, Gao GF. Two distinct conformations of a rinderpest virus epitope presented by bovine major histocompatibility complex class I N*01801: a host strategy to present featured peptides. J Virol. 2011 Jun;85(12):6038-48. Epub 2011 Mar 30. PMID:21450819 doi:10.1128/JVI.00030-11
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