Troponin T type 3 (skeletal, fast) is a human gene encoded by the symbol, TNNT3. It may also be known as: Troponin T, fast skeletal muscle; Beta-TnTF; Fast skeletal muscle troponin T; fTnT; TnTf; troponin-T3, skeletal, fast. The encoded protein has an amino acid length of 269 and a mass of 31.8 kDa. Troponin T type 3 (skeletal, fast) is a member of the Troponin T family. Homologs of this gene exist in other organisms, including: Mouse, Rat, Frog, Chicken.