Separation of the Sperm Agglutinin and the Acrosome Reaction-Inducing Substance in Egg Jelly of Starfish

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Science  07 Apr 1978:
Vol. 200, Issue 4337, pp. 58-59
DOI: 10.1126/science.200.4337.58


The egg jelly of the starfish Asterias amurensis was separated into the fractions J1, J2, and J3 on a Sephadex G-100 column. The Jl fraction induced the acrosome reaction and J2 induced sperm agglutination. Chemical analysis and chromatography revealed that sperm agglutinin is similar to asterosaponin A.