作者: Peter J. Kennelly , Koji Takio , Donald K. Blumenthal , Arthur M. Edelman , Moira B. Glaccum
DOI: 10.1016/B978-0-12-521040-9.50091-7
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摘要: Publisher Summary This chapter elaborates the organization of myosin light chain kinase from rabbit skeletal muscle. The kinases comprise a family tissue-specific isozymes whose function is to phosphorylate one components, P- or DTNB-light chain, myosin. Distinct isozyme forms Myosin Light Chain Kinase (MLCK) have been identified in skeletal, cardiac and smooth In addition, MLCK has detected nonmuscle tisues such as brain, T-cells, platelets cultured fibroblasts. All share several properties common. are monomers sole physiological appears be phosphorylating P-light Skeletal transfers gamma phosphoryl group ATP onto serine residue located at position 15 chain. reaction requires presence Mg 2+ . viewed being very substrate specific, only that it will with high efficiency chains. It found unlike its muscle counterpart, phosphorylates not indigenous but also those muscles.