The Y105 phosphosite between the SH3.1 and SH3.2 domains of Nck1 regulates its binding to CD3ϵ
Summary In αβ T cells, ligand binding to T cell receptor (TCR) triggers conformational changes at CD3ε subunits to expose the proline-rich sequence (PRS), which binds to the non-catalytic region of tyrosine kinase (Nck) via its Src homology 3 (SH3).1 domain. Recruitment of Nck to CD3ε initiates phosphorylation of vario...