Mutants of smooth muscle myosin light chain kinase at tryptophan 800.

Abstract

The importance of Trp 800 in the calmodulin-binding site of myosin light chain kinase was investigated. Truncation mutants from Leu 447 to the C-terminus were expressed in E. coli and these were modified by point mutations of Trp 800 to Gly, Cys, Leu and Tyr. Trp at this position was more effective than any of the other residues. The Leu mutant was… (More)

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