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.
Chemotaxis of Arbacia punctulata spermatozoa to resact, a peptide from the egg jelly layer.
- Views Icon Views
- Share Icon Share
- Search Site
G E Ward, C J Brokaw, D L Garbers, V D Vacquier; Chemotaxis of Arbacia punctulata spermatozoa to resact, a peptide from the egg jelly layer.. J Cell Biol 1 December 1985; 101 (6): 2324–2329. doi: https://doi.org/10.1083/jcb.101.6.2324
Download citation file: