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| | ==Mycobacterial lipoglycan presentation by CD1d== | | ==Mycobacterial lipoglycan presentation by CD1d== |
| - | <StructureSection load='2gaz' size='340' side='right' caption='[[2gaz]], [[Resolution|resolution]] 2.61Å' scene=''> | + | <StructureSection load='2gaz' size='340' side='right'caption='[[2gaz]], [[Resolution|resolution]] 2.61Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2gaz]] is a 2 chain structure with sequence from [http://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=2GAZ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2GAZ FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2gaz]] 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=2GAZ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2GAZ FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=MAN:ALPHA-D-MANNOSE'>MAN</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=XPX:(2R)-3-[(HYDROXY{[(2R,3R,5S,6R)-3,4,5-TRIHYDROXY-2,6-BIS(ALPHA-D-MANNOPYRANOSYLOXY)CYCLOHEXYL]OXY}PHOSPHORYL)OXY]PROPANE-1,2-DIYL+DIHEXADECANOATE'>XPX</scene></td></tr> | + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=XPX:(2R)-3-[(HYDROXY{[(2R,3R,5S,6R)-3,4,5-TRIHYDROXY-2,6-BIS(ALPHA-D-MANNOPYRANOSYLOXY)CYCLOHEXYL]OXY}PHOSPHORYL)OXY]PROPANE-1,2-DIYL+DIHEXADECANOATE'>XPX</scene>, <scene name='pdbligand=MAN:ALPHA-D-MANNOSE'>MAN</scene></td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1cd1|1cd1]], [[1zt4|1zt4]], [[1z5l|1z5l]], [[1zhn|1zhn]], [[2akr|2akr]]</td></tr> | + | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1cd1|1cd1]], [[1zt4|1zt4]], [[1z5l|1z5l]], [[1zhn|1zhn]], [[2akr|2akr]]</div></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Cd1d1, Cd1.1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10090 LK3 transgenic mice]), B2m ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10090 LK3 transgenic mice])</td></tr> | + | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Cd1d1, Cd1.1 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10090 LK3 transgenic mice]), B2m ([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'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2gaz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2gaz OCA], [http://pdbe.org/2gaz PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2gaz RCSB], [http://www.ebi.ac.uk/pdbsum/2gaz PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2gaz 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=2gaz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2gaz OCA], [https://pdbe.org/2gaz PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2gaz RCSB], [https://www.ebi.ac.uk/pdbsum/2gaz PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2gaz ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://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/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]] |
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| | ==See Also== | | ==See Also== |
| - | *[[Beta-2 microglobulin|Beta-2 microglobulin]] | + | *[[Beta-2 microglobulin 3D structures|Beta-2 microglobulin 3D structures]] |
| | *[[CD1|CD1]] | | *[[CD1|CD1]] |
| | == References == | | == References == |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| | + | [[Category: Large Structures]] |
| | [[Category: Lk3 transgenic mice]] | | [[Category: Lk3 transgenic mice]] |
| | [[Category: Zajonc, D M]] | | [[Category: Zajonc, D M]] |
| Structural highlights
2gaz is a 2 chain structure with sequence from Lk3 transgenic mice. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
| | Ligands: | , , , |
| Related: | |
| Gene: | Cd1d1, Cd1.1 (LK3 transgenic mice), B2m (LK3 transgenic mice) |
| Resources: | FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT |
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
Mycobacterial phosphatidylinositol tetramannosides (PIM4) are agonists for a distinct population of invariant human (Valpha24) and mouse (Valpha14) NKT cells, when presented by CD1d. We determined the crystal structure at 2.6-A resolution of mouse CD1d bound to a synthetic dipalmitoyl-PIM2. Natural PIM2, which differs in its fatty acid composition is a biosynthetic precursor of PIM4, PIM6, lipomannan, and lipoarabinomannan. The PIM2 headgroup (inositol-dimannoside) is the most complex to date among all the crystallized CD1d ligands and is remarkably ordered in the CD1d binding groove. A specific hydrogen-bonding network between PIM2 and CD1d orients the headgroup in the center of the binding groove and above the A' pocket. A central cluster of hydrophilic CD1d residues (Asp(153), Thr(156), Ser(76), Arg(79)) interacts with the phosphate, inositol, and alpha1-alpha6-linked mannose of the headgroup, whereas additional specificity for the alpha1- and alpha2-linked mannose is conferred by Thr(159). The additional two mannoses in PIM4, relative to PIM2, are located at the distal 6' carbon of the alpha1-alpha6-linked mannose and would project away from the CD1d binding groove for interaction with the TCR. Compared with other CD1d-sphingolipid structures, PIM2 has an increased number of polar interactions between its headgroup and CD1, but reduced specificity for the diacylglycerol backbone. Thus, novel NKT cell agonists can be designed that focus on substitutions of the headgroup rather than on reducing lipid chain length, as in OCH and PBS-25, two potent variants of the highly stimulatory invariant NKT cell agonist alpha-galactosylceramide.
Structural characterization of mycobacterial phosphatidylinositol mannoside binding to mouse CD1d.,Zajonc DM, Ainge GD, Painter GF, Severn WB, Wilson IA J Immunol. 2006 Oct 1;177(7):4577-83. PMID:16982895[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
- ↑ Zajonc DM, Ainge GD, Painter GF, Severn WB, Wilson IA. Structural characterization of mycobacterial phosphatidylinositol mannoside binding to mouse CD1d. J Immunol. 2006 Oct 1;177(7):4577-83. PMID:16982895
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