Journal of Cell Biology volume 217, issue 7, P2565-2582 2018 DOI: 10.1083/jcb.201711055 View full text
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Zhengpeng Wan, Chenguang Xu, Xiangjun Chen, Hengyi Xie, Zongyu Li, Jing Wang, Xingyu Ji, Haodong Chen, Qinghua Ji, Samina Shaheen, Yang Xu, Fei Wang, Zhuo Tang, Ji-Shen Zheng et al.

Abstract: B lymphocytes use B cell receptors (BCRs) to sense the chemical and physical features of antigens. The activation of isotype-switched IgG-BCR by mechanical force exhibits a distinct sensitivity and threshold in comparison with IgM-BCR. However, molecular mechanisms governing these differences remain to be identified. In this study, we report that the low threshold of IgG-BCR activation by mechanical force is highly dependent on tethering of the cytoplasmic tail of the IgG-BCR heavy chain (IgG-tail) to the plas…

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