- Dipeptidyl Peptidase 8 (DPP8)
 - Dipeptidyl Peptidase 7 (DPP7)
 - Dipeptidyl Peptidase 6 (DPP6)
 - Dipeptidyl Peptidase 3 (DPP3)
 - Tektin 2, Testicular (TEKT2)
 - Acid Phosphatase, Testicular (ACPT)
 - Diphosphoinositol Pentakisphosphate Kinase 1 (PPIP5K1)
 - Diphosphoinositol Pentakisphosphate Kinase 2 (PPIP5K2)
 - N-Acetylneuraminic Acid Phosphatase (NANP)
 - 5'-Nucleotidase, Cytosolic IA (NT5C1A)
 - 5'-Nucleotidase, Cytosolic IB (NT5C1B)
 - Nardilysin (NRD1)
 - Glycine/Arginine Rich Protein 1 (GRRP1)
 - Glycine Amidinotransferase (GATM)
 - Endoplasmic Reticulum Aminopeptidase 2 (ERAP2)