The successful expression of functional, full-length recombinant smooth-muscle MLCK in E. coli provides a critical tool for future structural and functional studies of smooth muscle contraction.
Provides a tool for MLCK structural studies; leaves open any cardiovascular therapeutic translation.
Background : Myosin light chain kinase (MLCK), a regulatory protein of smooth muscle contraction, not only catalyzes the phosphorylation of the myosin regulatory light chain (MLc 20) but also binds to actin. Full-length MLCK has not yet been successfully expressed, in spite of using various expression systems. Material and Methods : cDNA of the bovine stomach MLCK (BsMLCK) was expressed using an E. coli expression system. Result : Recombinant BsMLCK was expressed in a soluble form and phosphorylated MLc20. It also demonstrated actin-binding and actin-bundling activities. Conclusion : Recombinant BsMLCK, with the properties known for MLCK, was quantifiably expressed and is the first step in analyzing the structure and function of MLCK.
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Kazufumi Kawano (2005) studied this question.
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