Troponin I is the inhibitory subunit of troponin, the thin filament regulatory complex which confers calcium-sensitivity to striated muscle actomyosin ATPase activity. Binds to actin and tropomyosin. Interacts with TRIM63. Interacts with STK4/MST1. Belongs to the troponin I family. Note: This description may include information from UniProtKB.
Protein type: Actin-binding; Motility/polarity/chemotaxis; Motor
Molecular Function: actin binding; calcium channel inhibitor activity; calcium-dependent protein binding; protein binding; protein domain specific binding; protein kinase binding; troponin C binding; troponin T binding
Biological Process: cardiac muscle contraction; cellular calcium ion homeostasis; heart contraction; heart development; muscle filament sliding; negative regulation of ATPase activity; regulation of systemic arterial blood pressure by ischemic conditions; skeletal muscle contraction; vasculogenesis; ventricular cardiac muscle morphogenesis