purine nucleotide metabolic process NAD+ metabolic process https://github.com/geneontology/go-ontology/issues/21577 https://github.com/geneontology/go-ontology/issues/23467 https://github.com/geneontology/go-ontology/issues/29050 https://github.com/geneontology/go-ontology/issues/29666 oxidized nicotinamide adenine dinucleotide metabolic process oxidized NAD metabolic process NAD (oxidized) metabolic process oxidized NAD metabolism nicotinamide adenine dinucleotide metabolism The chemical reactions and pathways involving nicotinamide adenine dinucleotide (NAD+), a coenzyme that interconverts with its reduced form, NADH, in many redox and catabolic reactions. oxidized nicotinamide adenine dinucleotide metabolism biological_process Reactome:R-HSA-196807 nicotinamide adenine dinucleotide metabolic process NAD metabolism NAD phosphorylation and dephosphorylation NAD (oxidized) metabolism NAD metabolic process GO:0019674 nicotinamide nucleotide metabolic process