Article
Modulation of cardiac troponin C function by the cardiac-specific N-terminus of troponin I: influence of PKA phosphorylation and involvement in cardiomyopathies.
Journal of molecular biology - 18 Jan 2008
Baryshnikova Olga K, Li Monica X, Sykes Brian D
Abstract excerpt
The cardiac-specific N-terminus of cardiac troponin I (cTnI) is known to modulate the activity of troponin upon phosphorylation with protein kinase A (PKA) by decreasing its Ca(2+) affinity and increasing the relaxation rate of the thin filament. The molecular details of this modulation have not been elaborated to date. We have established that the N-terminus and the switch region of cTnI bind to cNTnC [the...
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