In biochemistry, a<unk>  or an aminotransferase is an enzyme that catalyzes a type of reaction between an amino acid and an α-keto acid. Specifically, this reaction (transamination) involves removing the amino group from     the amino acid, leaving behind an α-keto acid, and transferring it to the reactant α-keto acid and converting it into an amino acid. The enzymes are important in the production of various amino acids, and measuring the concentrations of various<unk> s in the blood is important in the diagnosing and tracking many diseases.<unk> s require the coenzyme pyridoxal-phosphate, which is converted into pyridoxamine in the first phase of the reaction, when an amino acid is converted into a keto acid. Enzyme-bound pyridoxamine in turn reacts with pyruvate, oxaloacetate, or alpha-ketoglutarate, giving alanine, aspartic acid, or glutamic acid, respectively.
The presence of elevated<unk> s can be an indicator of liver damage.
Transaminase
Aminotransferases
Isozyme
Aldehyde dehydrogenase
Phosphatase
Phosphoglucomutase
Saruplase
Glucose-6-phosphate dehydrogenase