| NOUN | substance | nicotinamide adenine dinucleotide, NAD | a coenzyme present in most living cells and derived from the B vitamin nicotinic acid |
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| Meaning | A coenzyme present in most living cells and derived from the B vitamin nicotinic acid; serves as a reductant in various metabolic processes. | |
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| Synonym | NAD | |
| Broader | coenzyme | A small molecule (not a protein but sometimes a vitamin) essential for the activity of some enzymes |
| Catalan | nicotinamida adenina dinucleòtid | |
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