Gene Information
Gene NameSPRASA
OrganismHomo sapiens (Human)
Gene Length215
Protein NamesSperm acrosome membrane-associated protein 3 (Cancer/testis antigen 54) (CT54) (Lysozyme-like acrosomal sperm-specific secretory protein ALLP-17) (Lysozyme-like protein 3) (Sperm lysozyme-like protein 1) (Sperm protein reactive with antisperm antibodies) (Sperm protein reactive with ASA) [Cleaved into: Sperm acrosome membrane-associated protein 3, membrane form; Sperm acrosome membrane-associated protein 3, processed form]
Target NameNA
Target TypeNA
Gene AgeNA
Evolutionary StageNA
AlphaFoldDBQ8IXA5
Gene CardSPACA3
Uniprot IDQ8IXA5
PfamPF00062
In ASDno
Allosteric PredictionNA
Ortholog in AnimalsNA
OhnologsNA
ParalogsNA
TissueNA
Tissue SpecificityThe processed form is expressed in sperm (at protein level). Expressed in testis, epididymis and placenta. {ECO:0000269|PubMed:12606493, ECO:0000269|PubMed:16014814}.
Pharmacological Animal ModelsNA
Gene Ontology
(biological process)
Gene Ontology
(cellular component)
Gene Ontology
(molecular function)
PDB NA 
DBSNP rs16967845  rs28963  rs35420663 
Subcellular location [CC][Isoform 1]: Cytoplasmic vesicle, secretory vesicle, acrosome membrane {ECO:0000305};
Single-pass type II membrane protein {ECO:0000305}. Note=Anterior acrosome in non-capacitated spermatozoa and retained in the equatorial segment and in the luminal face of both the inner and outer acrosomal membranes following capacitation and the acrosome reaction. {ECO:0000250}.;
[Isoform 2]: Secreted {ECO:0000305}.
Mouse PG classificationNA
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