The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
Application notesWB: Use at a concentration of 1-5 µg/ml. IF/ICC: Use at a concentration of 10 µg/ml. IHC-P: Use at a concentration of 1 µg/ml.
Not yet tested in other applications. Optimal dilutions/concentrations should be determined by the end user.
FunctionCatalyzes the S-methylation of thiopurine drugs such as 6-mercaptopurine.
Involvement in diseaseDefects in TPMT are the cause of thiopurine S-methyltransferase deficiency (TPMT deficiency) [MIM:610460]. 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.
Sequence similaritiesBelongs to the methyltransferase superfamily. TPMT family.