C CHEMISTRY; METALLURGY
C12 BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
C12N MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
C12N9/00 Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
C12N9/0004 Oxidoreductases (1.)
C12N9/0012 acting on nitrogen containing compounds as donors (1.4, 1.5, 1.6, 1.7)
C12N9/0036 acting on NADH or NADPH (1.6)