nicotinamide adenine dinucleotide molecule 3d rendering, flat molecular structure with chemical formula and atoms color coding

nicotinamide adenine dinucleotide nad coenzyme molecule molecular structure chemical formula model c21h28n7o14p2 atom carbon oxygen atomic hydrogen nitrogen alzheimer electron fold metabolism mitochondrion nadh phosphate phosphorus cell chemistry icon flat dehydrogenase isoniazid mitochondria nadp neurodegeneration oxidizing oxidoreductase parkinson redox rossman sirtuin skeletal compound cardiovascular composition structural illustration rendering atoms color coding coding