troponin-I

Function

• troponin I is the inhibitory subunit of troponin, the thin filament regulatory complex which confers Ca+2 sensitivity to striated muscle actomyosin ATPase activity
• binds to actin & tropomyosin

More general terms

• protein subunit
• Ca+2 binding protein
• phosphoprotein

More specific terms

• troponin I, cardiac muscle; cardiac troponin I (TNNI3, TNNC1)
• troponin I, fast skeletal muscle; troponin I, fast-twitch isoform (TNNI2)
• troponin I, slow skeletal muscle; troponin I, slow-twitch isoform (TNNI1)

Additional terms

• troponin-I in serum/plasma

Component of

• troponin