Abstract:
:Boar semen contains a seminal plasma motility inhibitor (SPMI) that blocks the motility of demembranated-reactivated spermatozoa as well as of intact spermatozoa. In this paper, we describe the primary structure of SPMI, the coding of boar SPMI cDNA gene and its expression in various porcine tissues. Nucleotide sequence analysis of the 645-bp SPMI cDNA predicts a coded polypeptide of 137 amino acid residues which includes a 21-residue signal peptide and a 116-residue secreted protein. The amino acid sequence of SPMI was found to be highly homologous to AQN-3, a member of spermadhesin family proteins of boar that bind to spermatozoa. Expression of the boar SPMI gene detected by Northern blot analysis revealed that its expression is very abundant in seminal vesicles and specific to this tissue.
journal_name
FEBS Lettjournal_title
FEBS lettersauthors
Iwamoto T,Hiroaki H,Furuichi Y,Wada K,Satoh M,Satoh M,Osada T,Gagnon Cdoi
10.1016/0014-5793(95)00701-asubject
Has Abstractpub_date
1995-07-24 00:00:00pages
420-4issue
3eissn
0014-5793issn
1873-3468pii
0014-5793(95)00701-Ajournal_volume
368pub_type
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