Sequences in both class II major histocompatibility complex alpha and beta chains contribute to the binding of the superantigen toxic shock syndrome toxin 1.

Sequences in both class II major histocompatibility complex alpha and beta chains contribute to the binding of the superantigen toxic shock syndrome toxin 1.
复制标题

II类主要组织相容性复合α和β链中的序列有助于超抗原毒性休克综合征毒素1的结合。

DOI:
10.1084/jem.175.5.1301
复制
发表时间:
1992-05-01
影响因子:
15.3
通讯作者:
KARP, D
KARP, D
中科院分区:
医学1区
文献类型:
--
作者:
BRAUNSTEIN, NS;WEBER, DA;WANG, XC;LONG, EO;KARP, D

文献摘要

参考文献

被引文献

相似文献

第二类主要组织相容性复合体(MHC)分子将经处理的抗原衍生的多肽呈递给抗原特异性的CD4+T细胞。此外,第二类分子与另一类抗原高亲和力结合,称为超抗原。超抗原对T细胞的刺激几乎完全依赖于T细胞受体(TCR)表达的Vβ片段。绘制II类分子上的超抗原结合位点图应该可以提供关于MHC和TCR分子如何相互作用的有价值的信息。分析了表达在L细胞上的重组小鼠I-AⅡ类分子与中毒性休克综合征毒素1的结合能力。I-A的α链和β链的α螺旋上的多态残基有助于毒素的定量结合,表明毒素可以结合到II类MHC分子上的组合或构象位点。
Class II major histocompatibility complex (MHC) molecules present peptides derived from processed antigen to antigen-specific CD4- positive T cells. In addition, class II molecules bind with high affinity another class of antigens, termed superantigens. T cell stimulation by superantigens depends almost exclusively on the V beta segment expressed by the T cell receptor (TCR). Mapping of the superantigen binding site on class II molecules should provide valuable information on how MHC and TCR molecules interact. Recombinant mouse I- A class II molecules expressed on transfected L cells were analyzed for their ability to bind the toxic shock syndrome toxin 1. Polymorphic residues in the alpha helices of both the alpha and beta chains of I-A contributed to quantitative toxin binding, suggesting that the toxin binds to either a combinatorial or a conformational site on class II MHC molecules.
葡萄球菌肠毒素刺激T细胞刺激。克隆的可变响应和对附件或靶细胞上的主要组织相容性复合物II类分子的需求。
DOI: 10.1084/jem.167.5.1697
发表时间: 1988-05-01
影响因子: 15.3
作者:
FLEISCHER, B;SCHREZENMEIER, H
通讯作者: SCHREZENMEIER, H
DOI: 10.1002/eji.1830200907
发表时间: 1990-09-01
影响因子: 5.4
作者:
SCHOLL, PR;SEKALY, RP;GEHA, RS
通讯作者: GEHA, RS
DOI: 10.1073/pnas.84.9.2921
发表时间: 1987-05-01
影响因子: 11.1
作者:
BRAUNSTEIN, NS;GERMAIN, RN
通讯作者: GERMAIN, RN
DOI: 10.1016/0092-8674(90)90388-u
发表时间: 1990-09-21
期刊: CELL
影响因子: 64.5
作者:
DELLABONA, P;PECCOUD, J;MATHIS, D
通讯作者: MATHIS, D
DOI: 10.1073/pnas.84.8.2435
发表时间: 1987-04-01
影响因子: 11.1
作者:
ACHAORBEA, H;MCDEVITT, HO
通讯作者: MCDEVITT, HO