Myosin light chain (MLC) is a subunit of the conventional myosins (e.g. myosin II). In smooth muscle and non-muscle cells conventional myosins mediate a wide variety of contractile events including cytokinesis, cell motility, and smooth muscle contraction. MLC is phosphorylated by multiple serine-threonine kinases such as Rho-kinase and PAK, however myosin light chain kinase (MLCK) acts as the primary kinase. Contractile activity of conventional myosins is regulated by phosphorylation of MLC on several residues. Phosphorylation of serine 19 (the major phosphorylation site and the preferred site for MLCK) activates myosin motor activity under physiological conditions.
Suitable for use in Immunofluorescence and Western Blot. Other applications not tested.
Immunofluorescence: 1:200. Localizes an epitope on the stress fibers of well spread human and chicken fibroblasts by indirect immunofluorescence.
Western Blot: Reacts with the 20kD light chains of SDS, heat-denatured and reduced chicken gizzard, chicken intestine, and porcine stomach myosin.
Optimal dilutions to be determined by the researcher.
Storage and Stability:
May be stored at 4 degrees C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20 degrees C. Aliquots are stable for 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.