Recombinant Human Myosin light chain 3 Protein Standard (His tag)

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

Myosin light chain 3 (MLC3) also known as myosin regulatory light chain 3 is a part of the myosin protein complex. It plays a major role in muscle contraction by regulating the ATPase activity of myosin heads. MLC3 is encoded by the MYL3 gene and has a molecular mass of approximately 18kDa. It is expressed mainly in cardiac and skeletal muscle tissues. By interacting with myosin heavy chains MLC3 contributes to the force-generating capacity of muscles.

Biological function summary

MLC3 functions as an essential component of the myosin light chain complex. This complex regulates contractile activity in muscle cells by modulating the interaction between actin and myosin chains. MLC3 activates the mechanical movement of myosin chains impacting cardiac and skeletal muscle contraction. When activated it affects the speed and strength of muscle contraction and it also has a role in muscle differentiation and development.

Pathways

MLC3 is an integral part of the muscle contraction pathway. It interacts with proteins such as tropomyosin and troponin which are important for the regulation of muscle contraction. Additionally MLC3 participates in the calcium signaling pathway which is pivotal for contraction processes in muscles. This interaction helps to control the cytosolic calcium concentration a critical factor in muscle contraction dynamics.

MLC3 has connections to cardiomyopathy and hypertrophic conditions. Mutations or dysregulation of MYL3 can lead to cardiac hypertrophy a disease where the heart muscle thickens abnormally. MLC3's interaction with troponin and other myosin chains can exacerbate cardiac conditions when these pathways are disrupted. Studies have linked deficiencies in MLC3 to improper muscle development which may underline some muscle myopathies.