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Sperm binding glycoprotein (SBG) produces calcium and bicarbonate dependent alteration of acrosome morphology and protein tyrosine phosphorylation on boar sperm by Juan M. Teijeiro; Marcelo O. Cabada; Patricia E. Marini is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

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## Abstract The oviduct is a dynamic organ which modulates gamete physiology. Two subpopulations of sperm have been described in the oviduct of sows, a majority with normal appearance in the deep furrows and a minority, centrally located, and showing damaged membranes. Sperm–oviduct interaction provides the formation of a sperm storage and allows the selection of sperm with certain qualities. Pig (__Sus scrofa__) oviductal sperm binding glycoprotein (SBG) binds to sperm and exposes Galβ1‐3GalNAc. This disaccharide may be recognized by boar spermadhesin AQN1, which seems to be involved in sperm interaction with the oviduct. SBG is present at the apical surface of the epithelial cells that surround the lumen of the oviduct rather than at the bottom of the crypts. These characteristics imply it could be involved in sperm interaction with this organ. In this study, we evaluate the effect of SBG over boar sperm. We show that the presence of SBG produces alterations of the acrosome morphology of sperm only when they are incubated in capacitating conditions. SBG binds to the periacrosomal region of sperm undergoing capacitation. Its presence induces an increase on the tyrosine‐phosphoryla

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Author

Juan M. Teijeiro; Marcelo O. Cabada; Patricia E. Marini

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0730-2312)

Published

2007

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)