This gene encodes an integral protein of the inner mitochondrial membrane. The enzyme couples hydride transfer between NAD(H) and NADP(+) to proton translocation across the inner mitochondrial membrane. Under most physiological conditions, the enzyme uses energy from the mitochondrial proton gradient to produce high concentrations of NADPH. The resulting NADPH is used for biosynthesis and in free radical detoxification. [provided by RefSeq, Sep 2016],
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Function:
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.,
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Cellular Localization:
Mitochondrion inner membrane ; Multi-pass membrane protein ; Matrix side .
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Tissue Expression:
Widely expressed with expression most readily detectable in adrenal, heart, kidney, thyroid and adipose tissues.
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Research Areas:
>>Nicotinate and nicotinamide metabolism ;
>>Metabolic pathways