- RecQ Protein Like Protein 5 (RECQL5)
- RecQ Protein Like Protein 4 (RECQL4)
- Related To Receptor Tyrosine Kinase (RYK)
- DNA Polymerase Zeta Catalytic Subunit (POLz)
- RNA Exonuclease 2 Homolog (REXO2)
- RNA Exonuclease 4 Homolog (REXO4)
- RNA Methyltransferase Like Protein 1 (RNMTL1)
- Ribonucleotide Reductase M2B (RRM2B)
- RNA Polymerase I Transcription Factor homolog (RRN3)
- SUMO Activating Enzyme Subunit 1 (SAE1)
- SCO Cytochrome Oxidase Deficient Homolog 1 (SCO1)
- SCO Cytochrome Oxidase Deficient Homolog 2 (SCO2)
- Sentrin Specific Protease 8 (SENP8)
- Sentrin Specific Protease 7 (SENP7)
- Sentrin Specific Protease 6 (SENP6)
