Disclosed are a nicotinamide adenine dinucleotide gene encoding fluorescent probe, a preparation method therefor and an application thereof. Disclosed respectively are recombined fluorescent fused-protein detection probes of reduced nicotinamide adenine dinucleotide and oxidized nicotinamide adenine dinucleotide, and a recombined fluorescent fused-protein detection probe for detecting the ratio between the reduced nicotinamide adenine dinucleotide and oxidized nicotinamide adenine dinucleotide.
NICOTINAMIDE ADENINE DINUCLEOTIDE GENE ENCODING FLUORESCENT PROBE, PREPARATION METHOD THEREFOR AND APPLICATION THEREOF