PKA Phosphorylates Serine 307 of Murine Cardiac Myosin Binding Protein-C In Vitro
نویسندگان
چکیده
منابع مشابه
Cardiac myosin binding protein C.
Myosin binding protein C (MyBP-C) is one of a group of myosin binding proteins that are present in the myofibrils of all striated muscle. The protein is found at 43-nm repeats along 7 to 9 transverse lines in a portion of the A band where crossbridges are found (C zone). MyBP-C contains myosin and titin binding sites at the C terminus of the molecule in all 3 of the isoforms (slow skeletal, fas...
متن کاملPKA-dependent phosphorylation of cardiac myosin binding protein C in transgenic mice.
OBJECTIVE To investigate the physiological role of cAMP-dependent protein kinase A (PKA)-mediated, cardiac myosin binding protein C (MyBP-C) phosphorylation. METHODS A cardiac MyBP-C cDNA lacking nine amino acids, which contained a phosphorylation site, was made, and subsequently used to generate multiple lines of transgenic mice. Upon confirming that a partial replacement of endogenous prote...
متن کاملAblation of cardiac myosin-binding protein-C accelerates stretch activation in murine skinned myocardium.
Cardiac myosin binding protein-C (cMyBP-C) is a thick filament accessory protein that binds tightly to myosin, but despite evidence that mutations in the cMyBP-C gene comprise a frequent cause of hypertrophic cardiomyopathy, relatively little is known about the role(s) of cMyBP-C in myocardium. Based on earlier studies demonstrating the potential importance of stretch activation in cardiac cont...
متن کاملCardiac myosin-binding protein-C phosphorylation and cardiac function.
The role of cardiac myosin binding protein-C (cMyBP-C) phosphorylation in cardiac physiology or pathophysiology is unclear. To investigate the status of cMyBP-C phosphorylation in vivo, we determined its phosphorylation state in stressed and unstressed mouse hearts. cMyBP-C phosphorylation is significantly decreased during the development of heart failure or pathologic hypertrophy. We then gene...
متن کاملCardiac myosin binding protein C gene is specifically expressed in heart during murine and human development.
Cardiac myosin binding protein C (MyBP-C) is a substantial component of the sarcomere, with both structural and regulatory roles. The gene encoding cardiac MyBP-C in humans is located on chromosome 11p11.2, and mutations that are most predicted to produce truncated proteins have been identified in this gene in unrelated families with familial hypertrophic cardiomyopathy (FHC). To understand bet...
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ژورنال
عنوان ژورنال: Biophysical Journal
سال: 2009
ISSN: 0006-3495
DOI: 10.1016/j.bpj.2008.12.2580