Key regulator of protein phosphatase 1C (PPP1C). Mediates binding to myosin. As part of the PPP1C complex, involved in dephosphorylation of PLK1. Capable of inhibiting HIF1AN-dependent suppression of HIF1A activity.
Subcellular locations: Cytoplasm, Cytoplasm, Cytoskeleton, Stress fiber
Also along actomyosin filaments.
Expressed in striated muscles, specifically in type 2a fibers (at protein level).