Myosin, a structural component of muscle, consists of two heavy chains and four light chains. The protein encoded by this gene is a myosin light chain that may regulate muscle contraction by modulating the ATPase activity of myosin heads. The encoded protein binds calcium and is activated by myosin light chain kinase. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008],LC20, MLC-2C, MLC2, MRLC1, MYRL2,Cell Biology & Developmental Biology,Cytoskeleton,Cytoskeleton_Actins,Cytoskeleton_Motor Proteins,Protein phosphorylation,Signal Transduction,TGF-b-Smad Signaling Pathway,MYL9