UNIPROT #

P10916

PROTEIN NAME

Myosin Light Chain 2

SYNONYMS

Cardiac myosin light chain-2 antibody; Cardiac ventricular myosin light chain 2 antibody; CMH10 antibody; MLC 2v antibody; MLC-2 antibody; MLC-2v antibody; MLC2 antibody; MLRV_HUMAN antibody; MYL 2 antibody; MYL2 antibody; Myosin light chain 2 regulatory cardiac slow antibody; Myosin light polypeptide 2 regulatory cardiac slow antibody; Myosin regulatory light chain 2 antibody; Myosin regulatory light chain 2 ventricular/cardiac muscle isoform antibody; Regulatory light chain of myosin antibody; RLC of myosin antibody; Slow cardiac myosin regulatory light chain 2 antibody; ventricular/cardiac muscle isoform antibody

POST-TRANSLATIONAL MODIFICATION

N-terminus is methylated by METTL11A/NTM1.; Phosphorylated by MYLK3 and MYLK2; promotes cardiac muscle contraction and function (By similarity). Dephosphorylated by PPP1CB complexed to PPP1R12B (By similarity). The phosphorylated form in adult is expressed as gradients across the heart from endocardium (low phosphorylation) to epicardium (high phosphorylation); regulates cardiac torsion and workload distribution (By similarity).

SUBCELLULAR LOCATION

Cytoplasm.

FUNCTION

Encoded by the MYL2 gene, myosin regulatory light chain 2, ventricular/cardiac muscle isoform, also designated MLC-2 or MLC2v, is part of a hexameric complex of two heavy chains and four light chains predominantly expressed in adult cardiac ventricle muscle. Myosin regulatory light chain 2 binds calcium and has been shown to be a useful molecular marker for cardiac chamber specification. The co-expression of myosin regulatory light chain 7 (MYL7) and myosin regulatory light chain 2 in the outflow tract and atrioventricular canal, together with the single expression in the atrial (MYL7) and ventricular (MYL2) myocardium, permits the delineation of their boundaries. At the amino acid level there is 96% homology between the human and mouse myosin regulatory light chain sequences. Mutations in MYL2 are correlated with mid-left ventricular chamber type hypertrophic cardiomyopathy (MVC2) as well as familial hypertrophic cardiomyopathy type 10 (CMH10).