|
|
| Line 3: |
Line 3: |
| | <StructureSection load='3ilq' size='340' side='right'caption='[[3ilq]], [[Resolution|resolution]] 2.05Å' scene=''> | | <StructureSection load='3ilq' size='340' side='right'caption='[[3ilq]], [[Resolution|resolution]] 2.05Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[3ilq]] is a 2 chain structure with sequence from [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=3ILQ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3ILQ FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[3ilq]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3ILQ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3ILQ FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=1O2:(2S)-3-(ALPHA-D-GALACTOPYRANOSYLOXY)-2-(HEXADECANOYLOXY)PROPYL+(9Z)-OCTADEC-9-ENOATE'>1O2</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]] 2.05Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[2fik|2fik]], [[1zhn|1zhn]], [[3ilp|3ilp]]</div></td></tr>
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=1O2:(2S)-3-(ALPHA-D-GALACTOPYRANOSYLOXY)-2-(HEXADECANOYLOXY)PROPYL+(9Z)-OCTADEC-9-ENOATE'>1O2</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">Cd1.1, CD1d, Cd1d1 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10090 LK3 transgenic mice]), B2m, beta 2 microblobulin, mCG_11606, RP23-34E24.5-001 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10090 LK3 transgenic mice])</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=3ilq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ilq OCA], [https://pdbe.org/3ilq PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3ilq RCSB], [https://www.ebi.ac.uk/pdbsum/3ilq PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3ilq 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=3ilq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ilq OCA], [https://pdbe.org/3ilq PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3ilq RCSB], [https://www.ebi.ac.uk/pdbsum/3ilq PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3ilq ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[https://www.uniprot.org/uniprot/CD1D1_MOUSE CD1D1_MOUSE]] Antigen-presenting protein that binds self and non-self glycolipids and presents them to T-cell receptors on natural killer T-cells.<ref>PMID:11754812</ref> <ref>PMID:16314439</ref> <ref>PMID:16007091</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/CD1D1_MOUSE CD1D1_MOUSE] Antigen-presenting protein that binds self and non-self glycolipids and presents them to T-cell receptors on natural killer T-cells.<ref>PMID:11754812</ref> <ref>PMID:16314439</ref> <ref>PMID:16007091</ref> |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
| Line 39: |
Line 38: |
| | </StructureSection> | | </StructureSection> |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Lk3 transgenic mice]] | + | [[Category: Mus musculus]] |
| - | [[Category: Zajonc, D M]] | + | [[Category: Zajonc DM]] |
| - | [[Category: Antigen presentation]]
| + | |
| - | [[Category: Borrelia burgdorferi]]
| + | |
| - | [[Category: Cd1]]
| + | |
| - | [[Category: Cell membrane]]
| + | |
| - | [[Category: Disulfide bond]]
| + | |
| - | [[Category: Endosome]]
| + | |
| - | [[Category: Glycoprotein]]
| + | |
| - | [[Category: Host defense]]
| + | |
| - | [[Category: Immune response]]
| + | |
| - | [[Category: Immune system]]
| + | |
| - | [[Category: Immunoglobulin domain]]
| + | |
| - | [[Category: Inkt cell]]
| + | |
| - | [[Category: Innate immunity]]
| + | |
| - | [[Category: Lysosome]]
| + | |
| - | [[Category: Membrane]]
| + | |
| - | [[Category: Mhc i]]
| + | |
| - | [[Category: Transmembrane]]
| + | |
| Structural highlights
Function
CD1D1_MOUSE Antigen-presenting protein that binds self and non-self glycolipids and presents them to T-cell receptors on natural killer T-cells.[1] [2] [3]
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
Invariant natural killer T cells (iNKT cells) respond to CD1d-presented glycolipids from Borrelia burgdorferi, the causative agent of Lyme disease. Although mouse and human iNKT cells respond to different antigens based on subtle differences in their fatty acids, the mechanism by which fatty acid structure determines antigenic potency is not well understood. Here we show that the mouse and human CD1d present glycolipids having different fatty acids, based in part upon a difference at a single amino acid position that is involved in positioning the sugar epitope. CD1d also can bind nonantigenic lipids, however, but unexpectedly, mouse CD1d orients the two aliphatic chains of a nonantigenic lipid rotated 180 degrees , causing a dramatic repositioning of the exposed sugar. Therefore, our data reveal the biochemical basis for the high degree of antigenic specificity of iNKT cells for certain fatty acids, and they suggest how microbes could alter fatty acid biosynthesis as an immune evasion mechanism.
Lipid binding orientation within CD1d affects recognition of Borrelia burgorferi antigens by NKT cells.,Wang J, Li Y, Kinjo Y, Mac TT, Gibson D, Painter GF, Kronenberg M, Zajonc DM Proc Natl Acad Sci U S A. 2009 Dec 30. PMID:20080535[4]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Jayawardena-Wolf J, Benlagha K, Chiu YH, Mehr R, Bendelac A. CD1d endosomal trafficking is independently regulated by an intrinsic CD1d-encoded tyrosine motif and by the invariant chain. Immunity. 2001 Dec;15(6):897-908. PMID:11754812
- ↑ Zajonc DM, Maricic I, Wu D, Halder R, Roy K, Wong CH, Kumar V, Wilson IA. Structural basis for CD1d presentation of a sulfatide derived from myelin and its implications for autoimmunity. J Exp Med. 2005 Dec 5;202(11):1517-26. Epub 2005 Nov 28. PMID:16314439 doi:10.1084/jem.20051625
- ↑ Zajonc DM, Cantu C 3rd, Mattner J, Zhou D, Savage PB, Bendelac A, Wilson IA, Teyton L. Structure and function of a potent agonist for the semi-invariant natural killer T cell receptor. Nat Immunol. 2005 Aug;6(8):810-8. Epub 2005 Jul 10. PMID:16007091 doi:10.1038/ni1224
- ↑ Wang J, Li Y, Kinjo Y, Mac TT, Gibson D, Painter GF, Kronenberg M, Zajonc DM. Lipid binding orientation within CD1d affects recognition of Borrelia burgorferi antigens by NKT cells. Proc Natl Acad Sci U S A. 2009 Dec 30. PMID:20080535
|
