NADP Transhydrogenase, AB-Specific

**Definition:** A NADP transhydrogenase subtype found in certain types of BACTERIA and mammalian MITOCHONDRIA. This transhydrogenase uses a mechanism that can transfer hydrogen to either side, A or B, of the NAD(+) or NADP(+) ring structure. In heart mitochondria, the enzyme is A-specific with respect to NAD(+) and B-specific with respect to NADP(+).

**Tree numbers:** - D08.811.682.608.540.500

**Synonyms:** - Pyridine nucleotide transhydrogenase, AB-Specific