The amino acid sequence of porcine cardiac troponin C is identical to bovine cardiac troponin C, consisting of 161 amino acids.
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Porcine-bovine cardiac troponin C sequence identity supports model interchangeability; leaves open human isoform relevance.
Troponin C is the Ca2+-receptive protein located on the thin filament of striated and cardiac muscle. We have determined the amino acid sequence of troponin C obtained from porcine cardiac muscle by sequencing and aligning the lysyl endopeptidase and Staphylococcus aureus V-8 protease peptides. It was composed of 161 amino acid residues with a blocked N-terminus. The sequence of porcine cardiac troponin C was identical with that of bovine cardiac troponin C.
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Kobayashi et al. (1989) studied this question.
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