| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species | 
| A5D992 | Protein sprouty homolog 1; Spry-1; | SPRY1; | NP_001092836.1; | 319 | cow | 
| Q08E39 | Protein sprouty homolog 2; Spry-2; | SPRY2; | NP_001069615.1;XP_005213938.1; | 315 | cow | 
| A2VDU1 | Protein sprouty homolog 4; Spry-4; | SPRY4; | NP_001074981.1;XP_005209581.1;XP_005209582.1;XP_005209583.1;XP_005209584.1; | 299 | cow | 
| Q32L17 | Spermatogenic leucine zipper protein 1; | SPZ1; | NP_001035630.1;XP_005221445.1; | 371 | cow | 
| Q2TBM9 | Protein SERAC1; Serine active site-containing protein 1; | SERAC1; | NP_001033639.1;XP_005211129.1; | 654 | cow | 
| Q05B65 | Serum response factor-binding protein 1; SRF-dependent transcription regulation-associated protein; | SRFBP1; | NP_001098919.1; | 428 | cow | 
| Q3MHW0 | Secretion-regulating guanine nucleotide exchange factor; | SERGEF; | NP_001069489.1; | 464 | cow | 
| A6QQL9 | Signal recognition particle 14 kDa protein; SRP14; | SRP14; | NP_001093820.1; | 110 | cow | 
| Q3ZBG7 | Signal recognition particle 19 kDa protein; SRP19; | SRP19; | NP_001029650.1; | 144 | cow | 
| Q2T9U1 | Signal recognition particle 54 kDa protein; SRP54; | SRP54; | NP_001033290.1;XP_005222113.1;XP_005222114.1;XP_005222115.1; | 504 | cow | 
| Q3MHE8 | Signal recognition particle receptor subunit alpha; SR-alpha; Docking protein alpha; DP-alpha; | SRPR; | NP_001068590.1; | 639 | cow | 
| Q5EA25 | Sushi repeat-containing protein SRPX2; | SRPX2; | NP_001014926.1; | 465 | cow | 
| A4IFB1 | Serrate RNA effector molecule homolog; Arsenite-resistance protein 2; | SRRT; ARS2; | NP_001077177.1; | 876 | cow | 
| A0JNI4 | Serine racemase; EC 4.3.1.17; EC 4.3.1.18; EC 5.1.1.18; D-serine ammonia-lyase; D-serine dehydratase; L-serine ammonia-lyase; L-serine dehydratase; | SRR; | NP_001071433.1; | 334 | cow | 
| Q0VCY7 | Serine/arginine-rich splicing factor 1; Splicing factor, arginine/serine-rich 1; | SRSF1; SFRS1; | NP_001069862.1; | 248 | cow | 
| Q3MHR5 | Serine/arginine-rich splicing factor 2; Splicing component, 35 kDa; Splicing factor SC35; SC-35; Splicing factor, arginine/serine-rich 2; | SRSF2; SFRS2; | NP_001029490.1;XP_005221227.1;XP_005221228.1;XP_005221229.1; | 221 | cow | 
| Q3SZR8 | Serine/arginine-rich splicing factor 3; Splicing factor, arginine/serine-rich 3; | SRSF3; SFRS3; | NP_001029872.1; | 164 | cow | 
| Q3B7L6 | Serine/arginine-rich splicing factor 6; Splicing factor, arginine/serine-rich 6; | SRSF6; SFRS6; | NP_001030349.1; | 345 | cow | 
| Q3T106 | Serine/arginine-rich splicing factor 7; Splicing factor, arginine/serine-rich 7; | SRSF7; SFRS7; | NP_001029449.1; | 235 | cow | 
| Q03255 | Sex-determining region Y protein; Testis-determining factor; | SRY; TDF; | NP_001014407.1; | 229 | cow | 
