NCIt synonyms : CT22; Sperm Protein 17; Sp17; Sperm Autoantigenic Protein 17; Cancer/Testis Antigen 22; Sp17-1; SPA17;
NCIt definition : Sperm surface protein Sp17 (151 aa, 17 kDa) is encoded by the human SPA17 gene. This
protein plays a role in the binding of spermatozoa to the carbohydrates in the zona
pellucida.;