3rg1: Difference between revisions
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< | ==Crystal structure of the RP105/MD-1 complex== | ||
<StructureSection load='3rg1' size='340' side='right'caption='[[3rg1]], [[Resolution|resolution]] 2.91Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[3rg1]] is a 16 chain structure with sequence from [https://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3RG1 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3RG1 FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.91Å</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=MAN:ALPHA-D-MANNOSE'>MAN</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=PGT:(1S)-2-{[{[(2R)-2,3-DIHYDROXYPROPYL]OXY}(HYDROXY)PHOSPHORYL]OXY}-1-[(PALMITOYLOXY)METHYL]ETHYL+STEARATE'>PGT</scene></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=3rg1 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3rg1 OCA], [https://pdbe.org/3rg1 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3rg1 RCSB], [https://www.ebi.ac.uk/pdbsum/3rg1 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3rg1 ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/A6QNK7_BOVIN A6QNK7_BOVIN] | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
RP105-MD-1 modulates the TLR4-MD-2-mediated, innate immune response against bacterial lipopolysaccharide (LPS). The crystal structure of the bovine 1:1 RP105-MD-1 complex bound to a putative endogenous lipid at 2.9 A resolution shares a similar overall architecture to its homolog TLR4-MD-2 but assembles into an unusual 2:2 homodimer that differs from any other known TLR-ligand assembly. The homodimer is assembled in a head-to-head orientation that juxtaposes the N-terminal leucine-rich repeats (LRRs) of the two RP105 chains, rather than the usual tail-to-tail configuration of C-terminal LRRs in ligand-activated TLR dimers, such as TLR1-TRL2, TLR2-TLR6, TLR3-TLR3 and TLR4-TLR4. Another unusual interaction is mediated by an RP105-specific asparagine-linked glycan, which wedges MD-1 into the co-receptor binding concavity on RP105. This unique mode of assembly represents a new paradigm for TLR complexes and suggests a molecular mechanism for regulating LPS responses. | |||
An unusual dimeric structure and assembly for TLR4 regulator RP105-MD-1.,Yoon SI, Hong M, Wilson IA Nat Struct Mol Biol. 2011 Aug 21;18(9):1028-35. doi: 10.1038/nsmb.2106. PMID:21857663<ref>PMID:21857663</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 3rg1" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
== | |||
== | |||
< | |||
[[Category: Bos taurus]] | [[Category: Bos taurus]] | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: | [[Category: Hong M]] | ||
[[Category: | [[Category: Wilson IA]] | ||
[[Category: | [[Category: Yoon SI]] | ||
Latest revision as of 05:21, 21 November 2024
Crystal structure of the RP105/MD-1 complexCrystal structure of the RP105/MD-1 complex
Structural highlights
FunctionPublication Abstract from PubMedRP105-MD-1 modulates the TLR4-MD-2-mediated, innate immune response against bacterial lipopolysaccharide (LPS). The crystal structure of the bovine 1:1 RP105-MD-1 complex bound to a putative endogenous lipid at 2.9 A resolution shares a similar overall architecture to its homolog TLR4-MD-2 but assembles into an unusual 2:2 homodimer that differs from any other known TLR-ligand assembly. The homodimer is assembled in a head-to-head orientation that juxtaposes the N-terminal leucine-rich repeats (LRRs) of the two RP105 chains, rather than the usual tail-to-tail configuration of C-terminal LRRs in ligand-activated TLR dimers, such as TLR1-TRL2, TLR2-TLR6, TLR3-TLR3 and TLR4-TLR4. Another unusual interaction is mediated by an RP105-specific asparagine-linked glycan, which wedges MD-1 into the co-receptor binding concavity on RP105. This unique mode of assembly represents a new paradigm for TLR complexes and suggests a molecular mechanism for regulating LPS responses. An unusual dimeric structure and assembly for TLR4 regulator RP105-MD-1.,Yoon SI, Hong M, Wilson IA Nat Struct Mol Biol. 2011 Aug 21;18(9):1028-35. doi: 10.1038/nsmb.2106. PMID:21857663[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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