MLCK is an acronym for Myosin Light Chain Kinase, an enzyme that plays a crucial role in smooth muscle contraction. Synonyms for MLCK include "myosin light chain kinase," "smooth muscle myosin light chain kinase," and "MLCK1." Other related terms that are often used interchangeably with MLCK include "phosphorylated myosin light chain," "MRLC kinase," and "calcium-dependent myosin light chain kinase." These terms all refer to the same fundamental concept, which is the activation of myosin light chains through biochemical processes. Understanding the various synonyms for MLCK is important for researchers, clinicians, and students who study muscle physiology and related fields.