Ready-to-use ELISA kits are available for the detection of smMLCK, an alias of the protein, myosin light chain kinase. The official gene symbol is MYLK. The protein, with a mass of 210.7 kDa and length of 1914 residues, is reported to be cytoplasmic. It is a member of the Protein kinase superfamily, CAMK Ser/Thr protein kinase family and may be known by other names, including: KRP, AAT7, smooth muscle myosin light chain kinase, myosin light polypeptide kinase, kinase-related protein, and myosin light chain kinase smooth muscle, and MLCK108.