| Nine-heme cytochrome c | Desulfovibrio desulfuricans (strain ATCC 27774 / DSM 6949) | May form part of a transmembrane redox complex through which electrons are transferred to the cytoplasm for reduction... more | 1 | Details |
| Nischarin | Humans | Acts either as the functional imidazoline-1 receptor (I1R) candidate or as a membrane-associated mediator of the I1R ... more | 8 | Details |
| Nitric oxide | Humans | Not Available | 4 | Details |
| Nitric oxide reductase | Moorella thermoacetica (strain ATCC 39073) | Has nitric oxide reductase activity in combination with Hrb; probably involved in nitrosative stress protection. | 1 | Details |
| Nitric oxide synthase | Not Available | A family of enzymes catalyzing the production of nitric oxide (NO) from L-arginine. | 6 | Details |
| Nitric oxide synthase 1 | Humans | Produces nitric oxide (NO) which is a messenger molecule with diverse functions throughout the body. In the brain and... more | 39 | Details |
| Nitric oxide synthase 3 | Humans | Produces nitric oxide (NO) which is implicated in vascular smooth muscle relaxation through a cGMP-mediated signal tr... more | 54 | Details |
| Nitric oxide synthase oxygenase | Bacillus subtilis (strain 168) | Catalyzes the production of nitric oxide. | 2 | Details |
| Nitric oxide synthase oxygenase | Staphylococcus aureus (strain MW2) | Catalyzes the production of nitric oxide. | 1 | Details |
| Nitric oxide synthase, inducible | Humans | Produces nitric oxide (NO) which is a messenger molecule with diverse functions throughout the body. In macrophages, ... more | 63 | Details |
| Nitrite reductase | Pseudomonas aeruginosa (strain ATCC 15692 / PAO1 / 1C / PRS 101 / LMG 12228) | Not Available | 2 | Details |
| Nitrite reductase | Paracoccus pantotrophus | Not Available | 3 | Details |
| Nitroreductase domain-containing protein | Streptococcus mutans serotype c (strain ATCC 700610 / UA159) | Not Available | 1 | Details |
| Nitroreductase family protein | Bacillus cereus (strain ATCC 14579 / DSM 31) | Not Available | 1 | Details |
| Nitroreductases | Trypanosoma cruzi | This group is comprised of various nitroreductase enzymes belonging to the organism Trypanosoma cruzi (T. cruzi) | 2 | Details |
| Nitrous-oxide reductase | Paracoccus denitrificans | Nitrous-oxide reductase is part of a bacterial respiratory system which is activated under anaerobic conditions in th... more | 1 | Details |
| NKG2-A/NKG2-B type II integral membrane protein | Humans | Immune inhibitory receptor involved in self-nonself discrimination. In complex with KLRD1 on cytotoxic and regulatory... more | 1 | Details |
| NKG2-D type II integral membrane protein | Humans | Functions as an activating and costimulatory receptor involved in immunosurveillance upon binding to various cellular... more | 1 | Details |
| NLR family member X1 | Humans | Participates in antiviral signaling. Acts as a negative regulator of MAVS-mediated antiviral responses, through the i... more | 1 | Details |
| NMDA receptor | Humans | Not Available | 46 | Details |
| NmrA-like family domain-containing protein 1 | Humans | Redox sensor protein. Undergoes restructuring and subcellular redistribution in response to changes in intracellular ... more | 1 | Details |
| Nociceptin receptor | Humans | G protein-coupled opioid receptor that functions as a receptor for the endogenous neuropeptide nociceptin. Ligand bin... more | 12 | Details |
| Nogalonic acid methyl ester cyclase | Streptomyces nogalater | Involved in the biosynthesis of the aromatic polyketide antibiotic nogalamycin. Catalyzes the formation of nogalavike... more | 1 | Details |
| Non-fluorescent flavoprotein | Photobacterium leiognathi | Not Available | 1 | Details |
| Non-heme chloroperoxidase | Pseudomonas fluorescens | Not Available | 1 | Details |