The domain within your query sequence starts at position 1 and ends at position 169; the E-value for the PBP_sp32 domain shown below is 6.2e-100.



PFAM accession number:PF07222
Interpro abstract (IPR009865):

This family consists of several mammalian specific proacrosin binding protein sp32 sequences. sp32 is a sperm specific protein, which is known to bind with 55- and 53kDa proacrosins and the 49kDa acrosin intermediate. The exact function of sp32 is unclear, it is thought however that the binding of sp32 to proacrosin may be involved in packaging the acrosin zymogene into the acrosomal matrix [ (PUBMED:8144514) ]. During the activation of the boar proacrosin/acrosin system, the expression of sp32 is upregulated and its tyrosine phosphorylation levels is increased [ (PUBMED:25867384) ].

This is a PFAM domain. For full annotation and more information, please see the PFAM entry PBP_sp32