GSTA3

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 genes that are located in a cluster mapped to chromosome 6. Genes of the alpha class are highly related and encode enzymes with glutathione peroxidase activity. However, during evolution, this alpha class gene diverged accumulating mutations in the active site that resulted in differences in substrate specificity and catalytic activity. The enzyme encoded by this gene catalyzes the double bond isomerization of precursors for progesterone and testosterone during the biosynthesis of steroid hormones. An additional transcript variant has been identified, but its full length sequence has not been determined. [provided by RefSeq, Jul 2008]

Description

Glutathione S-transferase alpha 3

Tissue specificity

Group enriched (adrenal gland, fallopian tube, placenta, skin)

Subcell location

Cytosol

Predicted location

Intracellular

Protein family

Enzymes
Mapped to neXtProt
Mapped to UniProt SWISS-PROT
Metabolic proteins
Predicted intracellular proteins
Protein evidence (Ezkurdia et al 2014)
Protein evidence (Kim et al 2014)

Chromosome

6 (52896639 - 52909698)

Ensembl ID

ENSG00000174156  (ver. 103.38)

Orthologs

-

UniProt

Q16772

neXtProt

NX_Q16772

Human splice variants

Protein structure