T细胞受体
违反直觉
债券
离解(化学)
能源景观
生物物理学
化学
计算机科学
认知科学
物理
生物
T细胞
经济
心理学
免疫学
生物化学
量子力学
物理化学
财务
免疫系统
作者
Cory M. Ayres,Steven A. Corcelli,Brian M. Baker
出处
期刊:Journal of Immunology
[The American Association of Immunologists]
日期:2023-08-01
卷期号:211 (3): 325-332
被引量:5
标识
DOI:10.4049/jimmunol.2300121
摘要
Abstract Recognition of peptide/MHC complexes by αβ TCRs has traditionally been viewed through the lens of conventional receptor–ligand theory. Recent work, however, has shown that TCR recognition and T cell signaling can be profoundly influenced and tuned by mechanical forces. One outcome of applied force is the catch bond, where TCR dissociation rates decrease (half-lives increase) when limited force is applied. Although catch bond behavior is believed to be widespread in biology, its counterintuitive nature coupled with the difficulties of describing mechanisms at the structural level have resulted in considerable mystique. In this review, we demonstrate that viewing catch bonds through the lens of energy landscapes, barriers, and the ensuing reaction rates can help demystify catch bonding and provide a foundation on which atomic-level TCR catch bond mechanisms can be built.
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