| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species |
| P24054 | SPARC-like protein 1; Matrix glycoprotein Sc1; | Sparcl1; Sc1; | NP_037078.1; | 634 | rat |
| Q5BIV7 | Shadow of prion protein; Protein shadoo; | Sprn; | NP_001027015.1;XP_006230635.1; | 147 | rat |
| D3ZVU1 | SprT-like domain-containing protein Spartan; Protein with SprT-like domain at the N terminus; Spartan; | Sprtn; | XP_006255870.1; | 496 | rat |
| P81728 | Sproutin; TA20; | NULL | NULL | 50 | rat |
| Q4FZT8 | SPRY domain-containing protein 4; | Spryd4; | NP_001032854.1;XP_006240808.1; | 207 | rat |
| Q5M7T2 | SPRY domain-containing protein 7; Chronic lymphocytic leukemia deletion region gene 6 protein homolog; CLL deletion region gene 6 protein homolog; | Spryd7; Clld6; | NP_001009635.1; | 196 | rat |
| Q5U2T3 | SPATS2-like protein; | Spats2l; | NP_001014124.1;XP_008765330.1;XP_008765331.1;XP_008765332.1; | 558 | rat |
| Q5M877 | SPRY domain-containing SOCS box protein 2; SSB-2; | Spsb2; Ssb2; | NP_001009660.1;XP_003750703.1;XP_006237398.1;XP_006237399.1;XP_006244687.1;XP_006244688.1; | 264 | rat |
| Q920Q3 | Spermatogenesis-associated protein 19, mitochondrial; Spermatogenic cell-specific gene 1 protein; Spergen-1; | Spata19; Spas1 Spergen1; | NP_599211.1; | 154 | rat |
| Q6T393 | Spermatogenesis-associated protein 20; Sperm-specific protein 411; Ssp411; | Spata20; | NP_955434.1; | 789 | rat |
| Q68A65 | Spermatogenesis-associated protein 21; Spermatogenic cell-specific gene 3 protein; Spergen-3; | Spata21; Spergen3; | NP_001004447.1;XP_008762499.1; | 685 | rat |
| B6VQA5 | Spermatogenesis-associated protein 31; Acrosome-expressed protein 1; | Spata31; Aep1 Vad1.3; | NP_001008360.2; | 1048 | rat |
| Q66H17 | Spermatogenesis-associated protein 32; Acrosome expressed protein 2; | Spata32; Aep2 Vad1.2; | NP_001005531.1; | 348 | rat |
| P16086 | Spectrin alpha chain, non-erythrocytic 1; Alpha-II spectrin; Fodrin alpha chain; | Sptan1; Spna2 Spta2; | NP_741984.2; | 2472 | rat |
| Q9QWN8 | Spectrin beta chain, non-erythrocytic 2; Beta SpIII sigma 1; Beta-III spectrin; Glutamate transporter EAAT4-associated protein 41; SPNB-3; Spectrin-like protein GTRAP41; | Sptbn2; Spnb3; | NP_062040.1; | 2388 | rat |
| Q4G019 | Serine palmitoyltransferase small subunit A; Small subunit of serine palmitoyltransferase A; ssSPTa; | Sptssa; Ssspta; | NP_001041208.1; | 71 | rat |
| M0R8L2 | Spexin; Liver regeneration-related protein LRRGT00060; NPQ; Neuropeptide Q; Spexin hormone; [Cleaved into: Spexin-1; Spexin-2 (NPQ 53-70)]; | SPX; | NP_001077402.2; | 116 | rat |
| P09139 | Serine--pyruvate aminotransferase, mitochondrial; SPT; EC 2.6.1.51; Alanine--glyoxylate aminotransferase; AGT; EC 2.6.1.44; | Agxt; Agt1; | NP_001263635.1;NP_085914.2; | 414 | rat |
| Q6AXY9 | Spermatogenic leucine zipper protein 1; | Spz1; | NP_001019468.1; | 400 | rat |
| O08623 | Sequestosome-1; Protein kinase C-zeta-interacting protein; PKC-zeta-interacting protein; Ubiquitin-binding protein p62; | Sqstm1; Zip; | NP_787037.2;NP_853528.1;XP_006246275.1; | 439 | rat |
