. "\"Catalysis of the reaction: NADPH + H+ + NAD+ = NADP+ + NADH + H+, driving the transfer of a solute or solutes from one side of a membrane to the other. In the course of the reaction (left to right) one H atom is transferred from inside the cell to outside. The reaction is B-specific (i.e. the pro-S hydrogen is transferred from the 4-position of reduced nicotinamide cofactor) with respect to both NAD+ and NADP+.\" [EC:1.6.1.1, http://pubs.acs.org/cgi-bin/abstract.cgi/jacsat/1991/113/i07/f-pdf/f_ja00007a002.pdf, MetaCyc:PYRNUTRANSHYDROGEN-RXN]" . . "NAD(P)+ transhydrogenase (B-specific) activity" . "NAD(P) transhydrogenase (B-specific) activity" . "NADPH:NAD+ oxidoreductase (B-specific)" . "non-energy-linked transhydrogenase activity" . "EC:1.6.1.1" . "MetaCyc:PYRNUTRANSHYDROGEN-RXN" . "RHEA:11695" . . . "NAD transhydrogenase" . "NADPH-NAD transhydrogenase" . "H+-thase" . "NADH transhydrogenase" . "NADH-NADP-transhydrogenase" . "NADPH-NAD oxidoreductase" . "NADPH:NAD+ transhydrogenase" . "nicotinamide adenine dinucleotide (phosphate) transhydrogenase" . "nicotinamide nucleotide transhydrogenase activity" . "pyridine nucleotide transferase" . "pyridine nucleotide transhydrogenase activity" .