Glutathione S-transferase kappa 1 (GSTK1)

Glutathione S-transferase kappa 1 (GSTK1) is an enzyme belonging to the kappa class of the glutathione S-transferase superfamily, uniquely targeted to mitochondria and peroxisomes[1][2][6]. It catalyzes the conjugation of glutathione to hydrophobic endogenous and exogenous substrates, facilitating cellular detoxification and the removal of potentially harmful compounds[1][4]. GSTK1 displays structural similarities to bacterial isomerases rather than to canonical cytosolic GSTs, and its activity profile suggests participation in specific non-canonical reactions or redox regulation[1][3]. Beyond detoxification, GSTK1 may function as a chaperone in adiponectin biosynthesis, thus influencing metabolic syndromes such as obesity and diabetes[2]. Mouse models lacking GSTK1 reveal subclinical glomerular disease and altered kidney structure, highlighting its physiological significance[6]. The protein is highly expressed in heart, kidney, liver, and skeletal muscle, and polymorphisms in its regulatory regions connect it to insulin secretion and metabolic disease pathology[2][6][4].

Other names

Glutathione S-transferase kappa 1GSTK1HDCMD47PhGSTK1GST13GST 13-13GST class-kappaGSTK1-1Glutathione S-transferase subunit 13GSTGST13-13glutathione S-transferase kappa 1glutathione S-transferase k1glutathione S-transferase subunit 13 homolog

Drugs or agents targeting GSTK1 (or GSTs in general) typically act by: - Inhibiting or modulating enzyme activity for detoxification - Altering glutathione conjugation reactions to modify cellular response to oxidative stress - Regulating metabolic or redox functions (speculative for GSTK1)