title: Amino acid sequence of troponin C obtained from ascidian (Halocynthia roretzi) body wall muscle.
abstract: The amino acid sequence of ascidian troponin C has been determined. It is composed of 155 amino acid residues and contains two tryptophan residues which have not been found in other troponin C sequences so far determined. The N-terminus is acetylated, and the molecular mass was calculated to be 17,794. Calcium binding sites I and III of ascidian troponin C appear to have lost the ability to bind calcium, and the total number of binding sites is reduced to two.
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001665:Binding Sites; D002118:Calcium / Q000378:metabolism; D002417:Cattle; D008970:Molecular Weight; D009130:Muscle, Smooth / Q000032:analysis*; D009132:Muscles / Q000032:analysis; D011485:Protein Binding; D011817:Rabbits; D013045:Species Specificity; D014336:Troponin / Q000302:isolation & purification* / Q000378:metabolism; D019209:Troponin C; D014561:Urochordata
chemical_list: D014336:Troponin; D019209:Troponin C; D002118:Calcium