| Chain | GOid | namespace | contents |
| A | 0004128 | molecular_function | cytochrome-b5 reductase activity, acting on NAD(P)H |
| A | 0005515 | molecular_function | protein binding |
| A | 0005576 | cellular_component | extracellular region |
| A | 0005737 | cellular_component | cytoplasm |
| A | 0005739 | cellular_component | mitochondrion |
| A | 0005741 | cellular_component | mitochondrial outer membrane |
| A | 0005783 | cellular_component | endoplasmic reticulum |
| A | 0005789 | cellular_component | endoplasmic reticulum membrane |
| A | 0005811 | cellular_component | lipid droplet |
| A | 0005833 | cellular_component | hemoglobin complex |
| A | 0006695 | biological_process | cholesterol biosynthetic process |
| A | 0006809 | biological_process | nitric oxide biosynthetic process |
| A | 0008015 | biological_process | blood circulation |
| A | 0016020 | cellular_component | membrane |
| A | 0016208 | molecular_function | AMP binding |
| A | 0016491 | molecular_function | oxidoreductase activity |
| A | 0031966 | cellular_component | mitochondrial membrane |
| A | 0035578 | cellular_component | azurophil granule lumen |
| A | 0043531 | molecular_function | ADP binding |
| A | 0050421 | molecular_function | nitrite reductase (NO-forming) activity |
| A | 0050660 | molecular_function | flavin adenine dinucleotide binding |
| A | 0051287 | molecular_function | NAD binding |
| A | 0071949 | molecular_function | FAD binding |
| A | 1903958 | cellular_component | nitric-oxide synthase complex |
