| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species |
| O46542 | Decorin; Bone proteoglycan II; Dermatan sulfate proteoglycan II; DS-PGII; PG-S2; | DCN; | NP_001075394.1;XP_005606524.1; | 360 | horse |
| Q9XS39 | Phosducin; PHD; | PDC; | NP_001075317.1;XP_005609800.1; | 245 | horse |
| P80010 | Plasminogen; EC 3.4.21.7; Fragment; [Cleaved into: Plasmin heavy chain A; Plasmin light chain B]; | PLG; | NULL | 338 | horse |
| Q6WL85 | Peripheral myelin protein 22; PMP-22; | PMP22; | NP_001075405.1;XP_005597077.1;XP_005597078.1; | 159 | horse |
| P12420 | Prolactin; PRL; | PRL; | NP_001075365.1; | 229 | horse |
| P15342 | Sperm histone P2a; Protamine 2a; ST2a; | NULL | NULL | 62 | horse |
| Q28380 | Vitamin K-dependent protein C; EC 3.4.21.69; Anticoagulant protein C; Autoprothrombin IIA; Blood coagulation factor XIV; Fragment; | PROC; | NULL | 157 | horse |
| O97921 | Prostaglandin-H2 D-isomerase; EC 5.3.99.2; Glutathione-independent PGD synthase; Lipocalin-type prostaglandin-D synthase; Prostaglandin-D2 synthase; PGD2 synthase; PGDS; PGDS2; | PTGDS; | NP_001075337.1; | 194 | horse |
| Q8HZJ2 | Prostaglandin E synthase; EC 5.3.99.3; Microsomal prostaglandin E synthase 1; MPGES-1; | PTGES; | NP_001075404.1; | 153 | horse |
| Q9GMB7 | Parathyroid hormone-related protein; PTH-rP; PTHrP; Fragment; [Cleaved into: Osteostatin]; | PTHLH; | NULL | 137 | horse |
| Q27IM2 | Parathyroid hormone; PTH; Parathyrin; | PTH; | NP_001075386.1; | 115 | horse |
| Q5W9D6 | Protein quaking; EqkI; | QKI; | NP_001075300.1; | 341 | horse |
| P22969 | Prorelaxin; RXN; [Cleaved into: Relaxin B chain; Relaxin A chain]; | RLN; | NP_001075278.1; | 182 | horse |
| Q28369 | Retinol-binding protein 4; Plasma retinol-binding protein; PRBP; RBP; | RBP4; | NP_001075420.1; | 201 | horse |
| Q6RG78 | Regulator of G-protein signaling 1; RGS1; | RGS1; | NP_001075408.1; | 196 | horse |
| Q6X9Z5 | 60S acidic ribosomal protein P2; | RPLP2; RPP2; | NP_001078905.1; | 115 | horse |
| P00674 | Ribonuclease pancreatic; EC 3.1.27.5; RNase 1; RNase A; | RNASE1; RNS1; | NULL | 128 | horse |
| Q70IB3 | Inactive ribonuclease-like protein 10; Protein Train A; | RNASE10; | NP_001157459.1; | 213 | horse |
| P55832 | 40S ribosomal protein S4; Fragment; | RPS4; | NULL | 194 | horse |
| Q9XSB7 | Runt-related transcription factor 2; Core-binding factor subunit alpha-1; CBF-alpha-1; Fragment; | RUNX2; CBFA1; | NULL | 131 | horse |
