Troponin T type 1 (skeletal, slow) is a human gene encoded by the symbol, TNNT1. It may also be known as: Troponin T, slow skeletal muscle; Slow skeletal muscle troponin T; sTnT; TnTs; troponin T1, skeletal, slow; nemaline myopathy type 5; ANM; NEM5. The encoded protein has an amino acid length of 278 and a mass of 32.9 kDa. Other isoforms may exist. Troponin T type 1 (skeletal, slow) is a member of the Troponin T family. Homologs of this gene exist in other organisms, including: Mouse, Rat, Zebrafish, Frog.