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C-terminal, alpha helical domain of an unknown subfamily 6 of Glutathione S-transferases Glutathione S-transferase (GST) C-terminal domain family, unknown subfamily 6; composed of uncharacterized bacterial proteins with similarity to GSTs, including Pseudomonas fluorescens GST with a known three-dimensional structure. GSTs are cytosolic dimeric proteins involved in cellular detoxification by catalyzing the conjugation of glutathione (GSH) with a wide range of endogenous and xenobiotic alkylating agents, including carcinogens, therapeutic drugs, environmental toxins, and products of oxidative stress. GSTs also show GSH peroxidase activity and are involved in the synthesis of prostaglandins and leukotrienes. The GST fold contains an N-terminal thioredoxin-fold domain and a C-terminal alpha helical domain, with an active site located in a cleft between the two domains. GSH binds to the N-terminal domain while the hydrophobic substrate occupies a pocket in the C-terminal domain. Though the three-dimensional structure of Pseudomonas fluorescens GST has been determined, there is no information on its functional characterization. |
Jiyao W et al.(2023). "The conserved domain database in 2023.",