Article
Cytotoxic T lymphocyte antigen 4 (CTLA-4) engagement delivers an inhibitory signal through the membrane-proximal region in the absence of the tyrosine motif in the cytoplasmic tail.
The Journal of experimental medicine - 20 Sept 1999
Nakaseko C, Miyatake S, Iida T, Hara S, Abe R, Ohno H, Saito Y, Saito T
Abstract excerpt
Cytotoxic T lymphocyte antigen 4 (CTLA-4) is a T cell costimulation receptor that delivers inhibitory signals upon activation. Although the tyrosine-based motif ((165)YVKM) within its cytoplasmic tail has been shown to associate in vitro with Src homology 2 domain-containing tyrosine phosphatase (SHP-2) and phosphatidylinositol 3 kinase upon phosphorylation, the mechanism of negative signaling remains unclear....
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