MYLK (Myosin Light Chain Kinase): MYLK is a gene that encodes an enzyme crucial for smooth muscle contraction. It phosphorylates myosin light chains, allowing actin-myosin interaction, and plays a vital role in regulating vascular tone and blood pressure. MYLK also supports other smooth muscle activities, including gastrointestinal motility and airway resistance. Alterations in MYLK function or expression have been associated with conditions such as asthma, hypertension, and certain cancers.