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- W2034303075 abstract "Spermadhesins are multifunctional proteins involved in boar sperm capacitation and gamete recognition. Using anti-AWN antibodies, we have followed the fate of spermadhesin AWN along the maturation and capacitation stages of boar spermatozoa. In addition, the amount of spermadhesins AQN-1, AQN-2, and AQN-3 relative to that of AWN was determined by amino acid analysis after reverse-phase HPLC isolation. Our data show that AWN-1 is the only spermadhesin on the surface of epididymal sperm and that a large amount of AQN-1, AQN-2, AQN-3, AWN-1 and AWN-2 become coated on ejaculated spermatozoa. The number of spermadhesin molecules on ejaculated sperm (12–60 × 106/spermatozoa) is sufficient to form a many-molecules-thick coat over the sperm head. However, 50–75% of the AQN-1, AQN-2, and AQN-3 population, and around 90% of coated AWN (1 + 2) are released from ejaculated sperm during capacitation. This indicates that a large subpopulation of each boar spermadhesin is loosely associated to the sperm surface and may function as decapacitation factors. The remaining spermadhesin molecules, which are tightly bound to the sperm head's surface may play a role as either positive capacitation factors and/or in gamete recognition and binding." @default.
- W2034303075 created "2016-06-24" @default.
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- W2034303075 date "1994-05-01" @default.
- W2034303075 modified "2023-10-18" @default.
- W2034303075 title "Quantitation of boar spermadhesins in accessory sex gland fluids and on the surface of epididymal, ejaculated and capacitated spermatozoa" @default.
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- W2034303075 doi "https://doi.org/10.1016/0304-4165(94)90026-4" @default.
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