An unusual dimeric structure and assembly for TLR4 regulator RP105-MD-1.
An unusual dimeric structure and assembly for TLR4 regulator RP105-MD-1.
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DOI:
10.1038/nsmb.2106
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发表时间:
2011-08-21
影响因子:
16.8
通讯作者:
中科院分区:
文献类型:
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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 Å resolution shares a similar overall architecture to its homologue TLR4–MD-2, but assembles into an unusual 2:2 homodimer which 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 TLR1–2, 3 and 4. Another novel interaction is mediated by an RP105-specific Asn-linked glycan, which wedges MD-1 into the co-receptor binding concavity on RP105. This unique mode of assembly in RP105–MD-1 represents a new paradigm for TLR complexes and suggests a potential molecular mechanism for regulating LPS responses.
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DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
影响因子:
56.9
作者:
Liu, Lin;Botos, Istvan;Davies, David R.
通讯作者:
Davies, David R.
DOI:
10.1179/096805105x67300
发表时间:
2005-12-01
期刊:
JOURNAL OF ENDOTOXIN RESEARCH
影响因子:
--
作者:
Divanovic, S;Trompette, A;Karp, CL
通讯作者:
Karp, CL
DOI:
10.1073/pnas.0505077102
发表时间:
2005-08-02
影响因子:
11.1
作者:
Bell, JK;Botos, I;Davies, DR
通讯作者:
Davies, DR
影响因子:
32.4
作者:
Kang, Jin Young;Nan, Xuehua;Lee, Jie-Oh
通讯作者:
Lee, Jie-Oh