MYLK/MYLK2 Substrate is a synthetic peptide substrate for Myosin Light Chain Kinase (MYLK). This is a substrate for smooth and skeletal muscle myosin light chain kinases (MYLK and MYLK2). It is derived from avian smooth muscle myosin P-light chain with ProÆAla and GlnÆAla. MYLK/MYLK2 Substrateis a synthetic substrate for MLCK