Aliases for ACTG1 Gene
External Ids for ACTG1 Gene
Previous Symbols for ACTG1 Gene
Actins are highly conserved proteins that are involved in various types of cell motility, and maintenance of the cytoskeleton. In vertebrates, three main groups of actin isoforms, alpha, beta and gamma have been identified. The alpha actins are found in muscle tissues and are a major constituent of the contractile apparatus. The beta and gamma actins co-exist in most cell types as components of the cytoskeleton, and as mediators of internal cell motility. Actin, gamma 1, encoded by this gene, is a cytoplasmic actin found in non-muscle cells. Mutations in this gene are associated with DFNA20/26, a subtype of autosomal dominant non-syndromic sensorineural progressive hearing loss. Alternative splicing results in multiple transcript variants.[provided by RefSeq, Jan 2011]
GeneCards Summary for ACTG1 Gene
ACTG1 (Actin Gamma 1) is a Protein Coding gene. Diseases associated with ACTG1 include baraitser-winter syndrome 2 and deafness, autosomal dominant 20/26. Among its related pathways are Ras signaling pathway and Proteoglycans in cancer. GO annotations related to this gene include identical protein binding and structural constituent of cytoskeleton. An important paralog of this gene is ACTB.
UniProtKB/Swiss-Prot for ACTG1 Gene
Actins are highly conserved proteins that are involved in various types of cell motility and are ubiquitously expressed in all eukaryotic cells
Actin is a ubiquitous globular protein that is one of the most highly-conserved proteins known. It is found in two main states; G-actin is the globular monomeric form, whereas F-actin forms helical polymers. Both G- and F-actin are intrinsically flexible structures - a feature vital in actins role as a dynamic filament network. Actin has four major functions. Firstly, F-actin polymers form microfilaments - polar intracellular tracks for kinesin motor proteins, allowing the transport of vesicles, organelles and other cargo. Actin is a component of the cytoskeleton and links to alpha-actinin, E-cadherin and beta-catenin at adherens junctions. This gives mechanical support to cells and attaches them to each other and the extracellular matrix. In muscle cells, actin-rich thin filaments associate with myosin-rich thick filaments to form actomyosin myofibrils. Using energy from the hydrolysis of ATP, myofibrils undergo cyclic shortening through actin-myosin head interactions, which represents the mechanics of muscle contraction. Finally, actin has a role in cell motility through polymerization and depolymerization of fibrils.