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Catalyzes the S-methylation of thiopurine drugs such as 6-mercaptopurine. Defects in TPMT are the cause of thiopurine S-methyltransferase deficiency (TPMT deficiency). TPMT is an enzyme involved in the normal metabolic inactivation of thiopurine drugs. These drugs are generally used as immunosupressants or cytotoxic drugs and are prescribed for a variety of clinical conditions including leukemia, autoimmune disease and organ transplantation. Patients with intermediate or no TPMT activity are at risk of toxicity after receiving standard doses of thiopurine drugs and it is shown that inter-individual differences in response to these drugs are largely determined by genetic variation at the TPMT locus.
仅用于科研。不用于诊断过程。未经明确授权不得转售。
蛋白别名: HGNC:12014; S-adenosyl-L-methionine:thiopurine S-methyltransferase; Thiopurine methyltransferase; Thiopurine S-methyltransferase
基因别名: AW106912; TPMT; TPMTD
UniProt ID: (Human) O15424, (Mouse) O55060
Entrez Gene ID: (Human) 7172, (Rat) 690050, (Mouse) 22017