Function
Converts the glycoprotein envelope surrounding the egg from an unfertlizable to a fertlizable form during its transit through the pars recta portion of the oviduct by selectively hydrolyzing the envelope glycoprotein gp43. The egg envelope is converted to a sperm-penetrable form, via an increase in sperm binding.
Similarity
Belongs to the peptidase S1 family.
Sequence
MPTRNLLLGSILLSLAVKGDPGPHRGARCGVSPLGSATELNYLSRIVGGRESKKGQHPWTVSLKRNGKHFCGGTLVSHCHVLTAAHCLLDRNVKLYMRVYIGEYDQILKEETEQMFRVIEIFKHPNFNQSQPMNYDVAVLLLDGSVTFDENIQPACLPNPDDVFEPGDLCVTLGWGHLTENGILPVVLQEVYLPIVDLSSCLHVMSALKGTVVSSYIVCAGFPEGGKDACQGDSGGPLLCQRRHGSWVLHGLTSWGMGCGRSWKNNVFLPHNRKGSPGIFTDIQKLLGWVSSQLNTAVPNKNQESCSMQDGVLSGKSGELIFLKNPMSVTRTMSGAPGFSLSLKTCTSCLNFTHLDIESDFACNLDYLAIYTDSHRLIGKFCGDIPPRSLLISFSSIKLNFFSDFHENRTGFVLYYSAVEPNTYPDSGCGSFAVLFEEGEIQSMNYPENYLSNSRCHWIIHGPSGSYIKLQFEDFALEPSDDCRSDYLAVYQDLAAEDKIETFCGFSLPAPVYSTTAVMHIKFSTDERDNDKGFRATFTFVSPNSLVEDSRQGNMPSTNKKETTAQDSICGVSQVPPIFIYNSIAKVEEAVPHSWPWHTSLQYAGEHVCDGAIIAENWILTTASCVLNRKFNDVWLVDPGIHDLLRPGHNQKGLVKQIIPHPSFSSQTNDFDIALVELDESLQFNSDIFPICLPGKTSELAPASLCVVSGWSLRGKEAEKSTKLQQREVPILTDDACSAHYIQNPGGITDRMLCAGIGTGQDNDSCSEQSGSPLVCLLEKKGIYTIFGIASWGVNCKENSKPGIYTKVSPFIDWIRQIMSDTGQIHSNLGDPKPHPMGNIEPEETAGRDIIQGGFPTNDASSNQNLYIASSCEDVVLLQSPGEIKMETKSQMYPNGFSCQWRIIAPKFQIIKLVMKQVHMSAENGKCCNSLIIYEGISKNKTLKVRFPTDEMVPGTVWSEGSSVTIESPPHPVDPEFGFCLVYSFHSRTQSQDHVVPDSDSSEP