| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species |
| Q9VN45 | Protein spartin; | spartin; | NP_001246910.1;NP_649485.1; | 553 | fruit fly |
| Q9GQQ0 | Protein spinster; Protein benchwarmer; Protein diphthong; | spin; bnch; | NP_524823.1;NP_725530.1;NP_725531.1;NP_725532.1;NP_725533.1; | 605 | fruit fly |
| Q9U1K1 | Protein spire; | spir; p150-Spir; | NP_001246102.1;NP_001286100.1;NP_524854.2;NP_724254.1;NP_724255.1;NP_724256.2; | 1020 | fruit fly |
| Q01083 | Protein spitz; | spi; | NP_001027281.1;NP_476909.2;NP_599118.2;NP_599119.2;NP_599120.2; | 234 | fruit fly |
| Q9VF26 | Probable ATP-dependent RNA helicase spindle-E; EC 3.6.4.13; Homeless; | spn-E; hls; | NP_476741.1; | 1434 | fruit fly |
| Q8MQW8 | Protein sprint; SH2 poly-proline-containing Ras-interactor protein; | spri; | NP_001096941.2;NP_001096944.1;NP_001259413.1;NP_001259414.1;NP_001259415.1;NP_001259416.1;NP_001259417.1;NP_001259418.1;NP_001259419.1;NP_001259420.1;NP_001259421.1;NP_788896.1;NP_996401.1; | 1789 | fruit fly |
| O18373 | Selenide, water dikinase; EC 2.7.9.3; Protein patufet; Selenium donor protein; Selenophosphate synthase; dSelD; | SelD; PTF1 ptuf; | NP_725374.1;NP_725375.1; | 398 | fruit fly |
| Q9VKY8 | Selenide, water dikinase 2; EC 2.7.9.3; Selenium donor protein 2; Dsps2; Selenophosphate synthase 2; | Sps2; | NP_001260329.1;NP_001260330.1;NP_477477.4;NP_477478.4; | 370 | fruit fly |
| Q8IRG6 | FACT complex subunit spt16; Facilitates chromatin transcription complex subunit SPT16; dSPT16; | dre4; spt16; | NP_476610.2;NP_728686.2; | 1083 | fruit fly |
| Q8IMP6 | Protein SPT2 homolog; | NULL | NP_651537.3;NP_733196.1; | 581 | fruit fly |
| Q9TVQ5 | Transcription elongation factor SPT4; DRB sensitivity-inducing factor small subunit; DSIF small subunit; dSpt4; | spt4; | NP_610802.1; | 116 | fruit fly |
| Q9V460 | Transcription elongation factor SPT5; DRB sensitivity-inducing factor large subunit; DSIF large subunit; dSpt5; | Spt5; | NP_652610.1; | 1078 | fruit fly |
| Q9W420 | Transcription elongation factor SPT6; | Spt6; | NP_001284936.1;NP_651962.2; | 1831 | fruit fly |
| P13395 | Spectrin alpha chain; | alpha-Spec; SPEC-A; | NP_476739.1; | 2415 | fruit fly |
| Q00963 | Spectrin beta chain; | beta-Spec; Spec-b; | NP_523388.1; | 2291 | fruit fly |
| O44783 | Protein sprouty; Spry; | sty; | NP_523902.2;NP_728881.1; | 589 | fruit fly |
| P48607 | Protein spaetzle; [Cleaved into: Protein spaetzle C-106]; | spz; | NP_524526.1;NP_733188.1;NP_733191.1;NP_733194.1;NP_733195.1; | 326 | fruit fly |
| Q08473 | RNA-binding protein squid; Heterogeneous nuclear ribonucleoprotein 40; HNRNP 40; | sqd; hrp40; | NP_001247088.1;NP_652209.1;NP_731825.1;NP_731826.1;NP_996203.1; | 344 | fruit fly |
| P40423 | Myosin regulatory light chain sqh; Myosin regulatory light chain, nonmuscle; MRLC-C; Protein spaghetti-squash; | sqh; | NP_001284928.1;NP_001284929.1;NP_001284930.1;NP_001284931.1;NP_511057.1; | 174 | fruit fly |
| Q9VDZ3 | Zinc finger protein squeeze; | sqz; | NP_524403.1; | 535 | fruit fly |
