PPP1R14A (CPI-17) phosphorylated on threonine T38 binds MLCP (myosin light chain phosphatase complex) and inhibits its catalytic activity. PPP1R14A simultanously associates with the MLCP catalytic subunit (PP1CB) and the regulatory subunit MYPT1 (PPP1R12A) (Eto et al. 2004).
Kitazawa, T, Eto, M, Brautigan, DL
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