GSTA4 Lysate – Tissue Lysate

Cytosolic and membrane-bound forms of glutathione S-transferase are encoded by two distinct supergene families. These enzymes are involved in cellular defense against toxic, carcinogenic, and pharmacologically active electrophilic compounds. At present, eight distinct classes of the soluble cytoplasmic mammalian glutathione S-transferases have been identified: alpha, kappa, mu, omega, pi, sigma, theta and zeta. This gene encodes a glutathione S-tranferase belonging to the alpha class. The alpha class genes, which are located in a cluster on chromosome 6, are highly related and encode enzymes with glutathione peroxidase activity that function in the detoxification of lipid peroxidation products. Reactive electrophiles produced by oxidative metabolism have been linked to a number of degenerative diseases including Parkinson's disease, Alzheimer's disease, cataract formation, and atherosclerosis. [provided by RefSeq, Jul 2008]

GSTA4: Conjugation of reduced glutathione to a wide number of exogenous and endogenous hydrophobic electrophiles. This isozyme has a high catalytic efficiency with 4-hydroxyalkenals such as 4- hydroxynonenal (4-HNE). Belongs to the GST superfamily. Alpha family.

Protein type: Xenobiotic Metabolism - drug metabolism - cytochrome P450; Other Amino Acids Metabolism - glutathione; Xenobiotic Metabolism - metabolism by cytochrome P450; Transferase; EC 2.5.1.18

Chromosomal Location of Human Ortholog: 6p12.1

Cellular Component: cytosol

Molecular Function: protein homodimerization activity; glutathione transferase activity

Biological Process: glutathione metabolic process; xenobiotic metabolic process