Researchers from Tokyo Metropolitan University have shown that the protein Musashi-2 (Msi2) plays a key role in the regulation of mass and metabolic processes in skeletal muscle. They studied mice with the Msi2 gene knocked out and found reduced muscle mass due to fewer type 2a muscle fibers. Myoglobin and mitochondria were also reduced. Type 2a fibers respond sensitively to training and illnesses; insights into their regulation will prove valuable in new therapies.
Click here for original story, Scientists investigate protein that controls skeletal muscle composition
Source: Phys.org