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Biology of Reproduction 63, 355B-360 (2000)
© 2000 Society for the Study of Reproduction, Inc.

Regular Article

Getting Sperm and Egg Together: Things Conserved and Things Diverged

Janice P. Evans1,a

a Division of Reproductive Biology, Department of Biochemistry and Molecular Biology, Johns Hopkins University, School of Hygiene and Public Health, Baltimore, Maryland 21205

ABSTRACT

Sperm-egg interactions occur at multiple levels on the egg surface, first with the egg's extracellular matrix and then with the egg's plasma membrane. The BioPore minisymposium on "The Egg Surface" at the 1999 annual meeting of the Society for the Study of Reproduction highlighted a series of events underlying successful interactions of the sperm with the egg: 1) composition, synthesis, and assembly of the mouse egg's extracellular matrix, the zona pellucida, during oogenesis; 2) oocyte maturation and development of the sperm-binding domain of mouse eggs; and 3) characterization of functional domains in different sperm ligands (fertilin-{alpha} and fertilin-ß in the mouse and lysin in the abalone) that recognize cognate binding sites on the egg surface. Data that were presented are reviewed here and discussed with respect to conserved and divergent features of gamete functions.

FOOTNOTES

First decision: 10 March 2000.

1 Correspondence: Janice P. Evans, Division of Reproductive Biology, Department of Biochemistry and Molecular Biology, Johns Hopkins University School of Public Health, 615 N. Wolfe St., Room 3606A, Baltimore, MD 21205. FAX: 410 614 2356; jpevans{at}jhsph.edu






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Copyright © 2000 by the Society for the Study of Reproduction.