Myosin light chain kinase 2 also known as MYLK2 is an enzyme which in humans is encoded by the MYLK2 gene.[5]
MYLK2 | |||||||||||||||||||||||||||||||||||||||||||||||||||
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Identifiers | |||||||||||||||||||||||||||||||||||||||||||||||||||
Aliases | MYLK2, KMLC, MLCK, MLCK2, skMLCK, myosin light chain kinase 2 | ||||||||||||||||||||||||||||||||||||||||||||||||||
External IDs | OMIM: 606566 MGI: 2139434 HomoloGene: 13223 GeneCards: MYLK2 | ||||||||||||||||||||||||||||||||||||||||||||||||||
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This gene encodes a myosin light chain kinase, a calcium / calmodulin dependent enzyme, that is exclusively expressed in adult skeletal muscle.[6] The MYLK2 gene expresses skMLCK more prevalently in fast twitch muscle fibers as compared to slow twitch muscle fibers. Calmodulin is composed of two terminal domains (N,C) each containing two E-F hand motifs that bind to Ca2+. Upon saturation of Ca2+, Calmodulin undergoes a conformation change allowing it to bind with a target protein such as skMLCK. An image depicting a similar complex (sdCen/skMLCK2) is shown under myosin light chain kinase. This binding to skMLCK increases the affinity of Ca2+ and ultimately leads to a sustained muscle action.[7]
Mutations in the MYLK2 gene have been linked to midventricular hypertrophic cardiomyopathy.[5]
This article incorporates text from the United States National Library of Medicine, which is in the public domain.