Thin-filament-binding domains of cardiac and fast skeletal muscle troponin I isoforms as studied by epitope tagging.

Abstract excerpt

We examined the binding domains of cardiac and fast skeletal muscle troponin I (CTnI and FTnI, respectively) to myofibrils (MFs). Deletion mutants containing CTnI amino acid residues 1-79, 43-207 and 80-207 (CTnI-head, CTnI-tail-I and CTnI-tail-2, respectively) and FTnI amino acid residues 1-54 and 55-182 (FTnI-head and FTnI-tail, respectively) were transiently expressed in cardiac and fast skeletal muscle cells....

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