- Aminomethyltransferase (AMT)
- Alpha-Methylacyl Coenzyme A Racemase (aMACR)
- Alkaline Phosphatase, Placental Like Protein 2 (ALPPL2)
- Allantoicase (ALLC)
- Aldo Keto Reductase Family 1, Member D1 (AKR1D1)
- Aldo Keto Reductase Family 1, Member C1 (AKR1C1)
- Aldo Keto Reductase Family 1, Member B1 (AKR1B1)
- Aldo Keto Reductase Family 1, Member A1 (AKR1A1)
- Activation Induced Cytidine Deaminase (AICDA)
- 1-Acylglycerol-3-Phosphate-O-Acyltransferase 2 (AGPAT2)
- 1-Acylglycerol-3-Phosphate-O-Acyltransferase 1 (AGPAT1)
- Agmatine Ureohydrolase (AGMAT)
- Arylformamidase (AFMID)
- Adenylosuccinate Synthase Like Protein 1 (ADSSL1)
- Adenylosuccinate Synthase (ADSS)
