catalytic activity:NADPH + NAD(+) = NADP(+) + NADH.,function:The transhydrogenation between NADH and NADP is coupled to respiration and ATP hydrolysis and functions as a proton pump across the membrane.,similarity:In the C-terminal section; belongs to the PNT beta subunit family.,similarity:In the N-terminal section; belongs to the AlaDH/PNT family.,subunit:Homodimer.,
Mitochondrion inner membrane ; Multi-pass membrane protein ; Matrix side .
Widely expressed with expression most readily detectable in adrenal, heart, kidney, thyroid and adipose tissues.