Báo cáo khoa học: Transcription factors Sp1 and C⁄EBP regulate NRAMP1 gene expression
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NAD is an important cofactor and essential molecule in all living organ-isms. In many eubacteria, including several pathogens, the first two steps in the de novosynthesis of NAD are catalyzed byl-aspartate oxidase (NadB) and quinolinate synthase (NadA). Despite the important role played by these two enzymes in NAD metabolism, many of their biochemical and structural properties are still largely unknown.
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