By Edward L. Chambers (auth.), Richard Nuccitelli, Gary N. Cherr, Wallis H. Clark Jr. (eds.)

ISBN-10: 1475708815

ISBN-13: 9781475708813

ISBN-10: 1475708831

ISBN-13: 9781475708837

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Alan R. Liss, New York. Kline, D. and R. Nuccitelli. 1985. The wave of activation current in the Xenopus egg. Dev. Biol. 111:471-487. Longo, F. J. 1986. Surface changes at fertilization: Integration of sea urchin (Arbacia punctulata) sperm and oocyte plasma membranes. Dev. Biol. 116:143-159. Longo, F. , J. W. Lynn, D. H. McCulloh, and E. L. Chambers. 1986. Correlative ultrastructural and electrophysiological studies of sperm-egg interactions of the sea urchin, Lytechinus variegatus. Dev. Biol. 118:155-166.

SnAL 10sec ~~ ls"J Figure 6. Diagrammatic representation of the conductance changes for an evolving activation current (type I) associated with sperm entry. The current profile is the same as shown in Figure 3A. The component A conductance is represented as the dark shaded area; the component B conductance as diagonal shading. While our data suggest that the component A conductance results from the insertion of sperm membrane channels into the egg membrane at the time the plasma membranes of the gametes fuse, for diagrammatic purposes the conductance A increase is represented as localized both in the membrane of the fused sperm, as well as in the egg membrane in the immediate vicinity of the attached sperm.

DISCUSSION . . . . . . . . . . . . . . . . . . . . . . . . . Voltage-Sensitive Step at Positive Membrane Potentials . . . . . . . . . Voltage-Sensitive Step at Negative Membrane Potentials . . . . . . . . . Two Distinct Voltage-Regulated Events Involved in Sperm Entry . . . . . . Association of Sperm Entry, Size of Fertilization Cone and the Type of Electrophysiological Response . . . . . . . . . . . CONCLUSION .

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Mechanisms of Egg Activation by Edward L. Chambers (auth.), Richard Nuccitelli, Gary N. Cherr, Wallis H. Clark Jr. (eds.)

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