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BIBTEX RIS

Chemotaxis of Arbacia punctulata spermatozoa to resact, a peptide from the egg jelly layer.

1985; Rockefeller University Press; Volume: 101; Issue: 6 Linguagem: Inglês

10.1083/jcb.101.6.2324

ISSN

1540-8140

Autores

Gary E. Ward, Charles J. Brokaw, David L. Garbers, Victor D. Vacquier,

Tópico(s)

Neurobiology and Insect Physiology Research

Resumo

Resact, a peptide of known sequence isolated from the jelly layer of Arbacia punctulata eggs, is a potent chemoattractant for A. punctulata spermatozoa. The chemotactic response is concentration dependent, is abolished by pretreatment of the spermatozoa with resact, and shows an absolute requirement for millimolar external calcium. A. punctulata spermatozoa do not respond to speract, a peptide isolated from the jelly layer of Strongylocentrotus purpuratus eggs. This is the first report of animal sperm chemotaxis in response to a defined egg-derived molecule.

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