- Serine/Threonine Kinase 11 (STK11)
- Serine/Threonine Kinase 33 (STK33)
- Serine/Threonine Kinase 35 (STK35)
- Serine/Threonine Kinase 4 (STK4)
- Serine/Threonine Kinase 3 (STK3)
- Serine Racemase (SRR)
- SRSF Protein Kinase 1 (SRPK1)
- SRSF Protein Kinase 2 (SRPK2)
- Squalene Epoxidase (SQLE)
- Serine Palmitoyltransferase, Long Chain Base Subunit 3 (SPTLC3)
- Serine Palmitoyltransferase, Long Chain Base Subunit 2 (SPTLC2)
- Serine Palmitoyltransferase, Long Chain Base Subunit 1 (SPTLC1)
- Sepiapterin Reductase (SPR)
- Sterol-O-Acyltransferase 2 (SOAT2)
- SNF Related Kinase (SNRK)
