| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species |
| Q2HJ92 | Interferon-inducible double-stranded RNA-dependent protein kinase activator A; Protein activator of the interferon-induced protein kinase; Protein kinase, interferon-inducible double-stranded RNA-dependent activator; | PRKRA; | NP_001039335.1; | 313 | cow |
| Q32KN9 | PRELI domain-containing protein 1, mitochondrial; | PRELID1; | NP_001033227.1; | 219 | cow |
| Q4EW11 | Prolactin-releasing peptide receptor; PrRP receptor; PrRPR; G-protein coupled receptor 10; | PRLHR; GPR10; | NP_001025471.1;XP_005225835.1; | 370 | cow |
| Q28172 | Prolactin receptor; PRL-R; | PRLR; | NP_001034815.1;NP_776580.1; | 581 | cow |
| P01239 | Prolactin; PRL; | PRL; | NP_776378.2; | 229 | cow |
| P19782 | Protamine-2; Sperm histone P2; Sperm protamine P2; | PRM2; | NP_776582.2; | 115 | cow |
| Q32PA2 | Protamine-3; Sperm protamine P3; | PRM3; | NP_001071521.1;XP_005196978.1; | 93 | cow |
| Q9GK16 | Prion-like protein doppel; PrPLP; | PRND; DPL; | NP_776583.1;XP_005214491.1; | 178 | cow |
| P00745 | Vitamin K-dependent protein C; EC 3.4.21.69; Anticoagulant protein C; Autoprothrombin IIA; Blood coagulation factor XIV; Fragment; [Cleaved into: Vitamin K-dependent protein C light chain; Vitamin K-dependent protein C heavy chain; Activation peptide]; | PROC; | NULL | 456 | cow |
| A6QQ74 | Probable proline dehydrogenase 2; EC 1.5.5.2; Probable proline oxidase 2; | PRODH2; | NP_001098437.1; | 461 | cow |
| Q148G5 | Proline dehydrogenase 1, mitochondrial; EC 1.5.5.2; Proline oxidase; | PRODH; | NP_001068653.1; | 593 | cow |
| P02584 | Profilin-1; Profilin I; | PFN1; | NP_001015592.1; | 140 | cow |
| Q09430 | Profilin-2; Profilin II; | PFN2; | NP_001121669.1; | 140 | cow |
| Q32PB1 | Profilin-3; | PFN3; | NP_001071413.1; | 137 | cow |
| Q2NKT1 | Profilin-4; | PFN4; | NP_001068845.1; | 129 | cow |
| Q863H5 | Prokineticin-2; PK2; | PROK2; | NP_955516.1; | 128 | cow |
| Q8MJI9 | Homeobox protein prophet of Pit-1; PROP-1; Pituitary-specific homeodomain factor; | PROP1; | NP_777103.1; | 226 | cow |
| Q3T0G5 | Proline synthase co-transcribed bacterial homolog protein; | PROSC; | NP_001029529.1; | 273 | cow |
| P07224 | Vitamin K-dependent protein S; | PROS1; PROS; | NP_776863.1; | 675 | cow |
| P00744 | Vitamin K-dependent protein Z; | PROZ; | NULL | 396 | cow |
