oksüdeeritud nikotiinamiid adeniin dinukleotiid/redutseeritud nikotiinamiid adeniin dinukleotiid
redoksreaktsioonides osalev elektrone transportiv kandja, Electron carrier in redox-reactions. Oxydized NAD+ binds 2 electrons and a proton. Reduced NADH that forms will give electrons over to the transport chain in mitochondria, enabling ATP synthesis via oxydative phosphorylation.