| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species |
| E1BPN0 | Polynucleotide 5'-hydroxyl-kinase NOL9; EC 2.7.1.-; Nucleolar protein 9; | NOL9; | NP_001193528.1; | 694 | cow |
| Q5E996 | Nucleolar protein 16; | NOP16; | NP_001014856.1; | 178 | cow |
| Q3SZ63 | Nucleolar protein 56; Nucleolar protein 5A; | NOP56; NOL5A; | NP_001028794.1; | 596 | cow |
| Q27995 | Nitric oxide synthase, inducible; EC 1.14.13.39; Inducible NO synthase; Inducible NOS; iNOS; NOS type II; NOSII; Peptidyl-cysteine S-nitrosylase NOS2; | NOS2; | NP_001070267.1; | 1156 | cow |
| P29473 | Nitric oxide synthase, endothelial; EC 1.14.13.39; Constitutive NOS; cNOS; EC-NOS; Endothelial NOS; eNOS; NOS type III; NOSIII; | NOS3; | NULL | 1205 | cow |
| Q3SWY5 | Nitric oxide synthase-interacting protein; | NOSIP; | NP_001068970.1; | 302 | cow |
| Q2KJB5 | Nostrin; Nitric oxide synthase trafficker; eNOS trafficking inducer; | NOSTRIN; | NP_001039722.1; | 505 | cow |
| A6H767 | Nucleosome assembly protein 1-like 1; | NAP1L1; | NP_001092685.1;XP_877406.1; | 391 | cow |
| Q2TA40 | Nucleosome assembly protein 1-like 4; | NAP1L4; | NP_001033183.1; | 386 | cow |
| Q1RMM5 | Nucleosome assembly protein 1-like 5; | NAP1L5; | NP_001071346.1; | 192 | cow |
| Q8MJV3 | Neuropeptides B/W receptor type 1; G-protein coupled receptor 7; | NPBWR1; GPR7; | NP_776499.1; | 331 | cow |
| Q8MJV2 | Neuropeptides B/W receptor type 2; G-protein coupled receptor 8; | NPBWR2; GPR8; | NP_776500.1; | 336 | cow |
| Q8MJV4 | Neuropeptide B; Preproprotein L7; bPPL7; [Cleaved into: Neuropeptide B-29 (NPB29) (L7C)]; | NPB; | NP_776369.1; | 122 | cow |
| P79345 | Epididymal secretory protein E1; EPV20; Niemann Pick type C2 protein homolog; | NPC2; | NP_776343.1; | 149 | cow |
| Q9TUX7 | Pro-FMRFamide-related neuropeptide FF; FMRFamide-related peptides; [Cleaved into: Neuropeptide SF (NPSF); Neuropeptide FF (NPFF); Neuropeptide AF (NPAF)]; | NPFF; | NP_776548.1; | 115 | cow |
| Q29RY9 | N-acetylneuraminate lyase; NALase; EC 4.1.3.3; N-acetylneuraminate pyruvate-lyase; N-acetylneuraminic acid aldolase; Sialate lyase; Sialate-pyruvate lyase; Sialic acid aldolase; Sialic acid lyase; | NPL; | NP_001039443.1;XP_005217334.1;XP_005217335.1; | 320 | cow |
| P15506 | Morphine-modulating neuropeptide A; | NULL | NULL | 18 | cow |
| P15507 | Morphine-modulating neuropeptide B; | NULL | NULL | 8 | cow |
| Q3T160 | Nucleophosmin; NPM; | NPM1; | NP_001030518.1; | 294 | cow |
| Q5E9U9 | Nitrogen permease regulator 2-like protein; NPR2-like protein; Tumor suppressor candidate 4; | NPRL2; TUSC4; | NULL | 380 | cow |
