An old Twist in HLA-A: CDR3α Hook up at an R65-joint.
An old Twist in HLA-A: CDR3α Hook up at an R65-joint.
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DOI:
10.3389/fimmu.2015.00268
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发表时间:
2015
影响因子:
7.3
通讯作者:
Murray JS
中科院分区:
文献类型:
--
作者:
Murray JS
T-cell ontogeny optimizes the α/β T-cell receptor (TCR) repertoire for recognition of major histocompatibility complex (MHC) class-I/II genetic polymorphism, and co-evolution of TCR germline V-gene segments and the MHC must entail somatic diversity generated in the third complimentary determining regions (CDR3α/β); however, it is still not clear how. Herein, a conspicuous structural link between the V-Jα used by several different TCR [all in complex with the same MHC molecule (HLA-A2)], and a conserved MHC motif (a.a., R65-X-X-K-A-X-S-Q72) is described. We model this R65-joint in detail, and show that the same TCR’s CDR3α loop maintains its CDR2α loop at a distance of ~4 Å from polymorphic amino acid (a.a.) positions of the α-2 helix in all but one of the analyzed crystal structures. Indeed, the pitch of docked TCRs varies as their twist/tilt/sway maintains the R65-joint and peptide contacts. Thus, the R65-joint appears to have poised the HLA-A lineage toward alloreactivity.
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DOI:
10.4049/jimmunol.1003150
发表时间:
2011-03-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Borbulevych OY;Piepenbrink KH;Baker BM
通讯作者:
Baker BM
影响因子:
32.4
作者:
Adams JJ;Narayanan S;Liu B;Birnbaum ME;Kruse AC;Bowerman NA;Chen W;Levin AM;Connolly JM;Zhu C;Kranz DM;Garcia KC
通讯作者:
Garcia KC
影响因子:
3.8
作者:
Parham, P.;Norman, P. J.;Abi-Rached, L.;Hilton, H. G.;Guethlein, L. A.
通讯作者:
Guethlein, L. A.
影响因子:
64.5
作者:
Birnbaum ME;Mendoza JL;Sethi DK;Dong S;Glanville J;Dobbins J;Ozkan E;Davis MM;Wucherpfennig KW;Garcia KC
通讯作者:
Garcia KC
影响因子:
64.8
作者:
Agrawal, A;Eastman, QM;Schatz, DG
通讯作者:
Schatz, DG