منابع مشابه
Abnormal cardiac structure and function in mice expressing nonphosphorylatable cardiac regulatory myosin light chain 2.
A role for myosin phosphorylation in modulating normal cardiac function has long been suspected, and we hypothesized that changing the phosphorylation status of a cardiac myosin light chain might alter cardiac function in the whole animal. To test this directly, transgenic mice were created in which three potentially phosphorylatable serines in the ventricular isoform of the regulatory myosin l...
متن کاملMyosin light-chain phosphatase.
1. A method for the isolation of a new enzyme, myosin light-chain phosphatase, from rabbit white skeletal muscle by using a Sepharose-phosphorylated myosin light-chain affinity column is described. 2. The enzyme migrated as a single component on electrophoresis in sodium dodecyl sulphate/polyacrylamide gel at pH7.0, with apparent mol.wt. 70000. 3. The enzyme was highly specific for the phosphor...
متن کاملIdentification of cardiac-specific myosin light chain kinase.
Two myosin light chain (MLC) kinase (MLCK) proteins, smooth muscle (encoded by mylk1 gene) and skeletal (encoded by mylk2 gene) MLCK, have been shown to be expressed in mammals. Even though phosphorylation of its putative substrate, MLC2, is recognized as a key regulator of cardiac contraction, a MLCK that is preferentially expressed in cardiac muscle has not yet been identified. In this study,...
متن کاملMyosin light-chain kinase of smooth muscle stimulates myosin ATPase activity without phosphorylating myosin light chain.
Myosin light-chain kinase (MLCK) of smooth muscle is multifunctional, being composed of N-terminal actin-binding domain, central kinase domain, and C-terminal myosin-binding domain. The kinase domain is the best characterized; this domain activates the interaction of smooth-muscle myosin with actin by phosphorylating the myosin light chain. We have recently shown that the Met-1-Pro-41 sequence ...
متن کاملMyosin light chain 2 into the mainstream of cardiac development and contractility.
Myocardium exhibits a remarkably broad dynamic range of function that is normally well matched to the circulatory load on the heart. Regulation of cardiac contraction is a multifaceted process that is well understood in terms of the activating role of Ca but much less well in terms of modulation by thick filament accessory proteins and by post-translational modification of thick and thin filame...
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ژورنال
عنوان ژورنال: Circulation Research
سال: 2006
ISSN: 0009-7330,1524-4571
DOI: 10.1161/01.res.0000234807.16034.fe