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Abstract
Glutathione S Transferases: Biochemistry, Polymorphism and Role in Colorectal Carcinogenesis
Saniya Nissar, Aga Syed Sameer, Roohi Rasool, Nissar A Chowdri and Fouzia Rashid
Glutathione S-transferases (GSTs) are enzymes detoxifying a wide range of hazardous substances both of endogenous or exogenous origin, such as reactive oxygen species (ROS) or xenobiotics and environmental carcinogens; thereby imparting protection to DNA against oxidative damage. GST gene polymorphisms on the other hand, exert an effect on the functioning of enzymes encoded by these genes at both gene expression level and the activity of the protein. In this way it may influence the possibility of detoxification of carcinogens, and consequently, the level of DNA damage; thus it may have an effect on the risk of development of cancer. In this review we aim to understand the function of GSTs in the xenobiotic metabolism and their role in modulation of colorectal cancer (CRC).