Human Actin Gamma 2, Smooth Muscle (ACTg2) Protein

Background

ACTG2 encodes gamma-actin, a highly conserved cytoskeletal protein primarily expressed in smooth muscle cells. It plays a vital role in maintaining the structure and contractility of smooth muscle tissues in organs such as the gastrointestinal tract and bladder. As part of the actin family, ACTG2 contributes to cellular processes like motility, intracellular transport, and mechanical force generation. Mutations in ACTG2 have been associated with disorders such as visceral myopathy, characterized by severe dysfunction of smooth muscle contractility. This protein is essential for the proper functioning of muscle-based physiological activities and demonstrates high evolutionary conservation due to its critical cellular roles.