Troponin C, represented by the TNNC1 gene, centrally regulates striated muscle contraction. In the troponin complex consisting of Tn-I, Tn-T, and Tn-C, Tn-I inhibits the actomyosin ATPase, while Tn-T binds to tropomyosin. Troponin C/TNNC1 Protein, Human (N-His) is the recombinant human-derived Troponin C/TNNC1 protein, expressed by E. coli , with N-6*His labeled tag.