Sperm Surface Protein Sp17

**Semantic type:** Amino Acid, Peptide, or Protein

**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.

**Synonyms:** - CT22 - Cancer/Testis Antigen 22 - SPA17 - Sp17 - Sp17-1 - Sperm Autoantigenic Protein 17 - Sperm Protein 17