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Xenopus laevis sperm proteins, previously identified as surface proteins with egg coat binding capability, are indeed
G Bernardini1, I D Donne, S Norreri
1Dipartimento di Biologia, Università di Milano, Italy.
The Journal of Experimental Zoology
|August 15, 1992
Abstract:
Recently, four Xenopus sperm proteins thought to be involved in binding to the egg envelope were identified (Lindsay and Hedrick, J. Exp. Zool., 245:286-293, '88). We have studied the three more abundant ones of apparent molecular weight of 14, 19, and 25 kd in SDS-PAGE. We have shown that these proteins are indeed nuclear basic proteins: the 14 kd is the histone H4, the 19 kd is the histone H3, and the 25 kd is the sperm-specific protein SP2.