Signaling to myosin regulatory light chain in sarcomeres

Research output: Contribution to journalShort surveypeer-review

81 Scopus citations


Myosin regulatory light chain (RLC) phosphorylation in skeletal and cardiac muscles modulates Ca2+-dependent troponin regulation of contraction. RLC is phosphorylated by a dedicated Ca2+-dependent myosin light chain kinase in fast skeletal muscle, where biochemical properties of RLC kinase and phosphatase converge to provide a biochemical memory for RLC phosphorylation and post-activation potentiation of force development. The recent identification of cardiac-specific myosin light chain kinase necessary for basal RLC phosphorylation and another potential RLC kinase (zipper-interacting protein kinase) provides opportunities for new approaches to study signaling pathways related to the physiological function of RLC phosphorylation and its importance in cardiac muscle disease.

Original languageEnglish (US)
Pages (from-to)9941-9947
Number of pages7
JournalJournal of Biological Chemistry
Issue number12
StatePublished - Mar 25 2011

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Cell Biology


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