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Science 7 April 1978:
Vol. 200. no. 4337, pp. 58 - 59
DOI: 10.1126/science.200.4337.58
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Articles

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

YOHKO UNO 1 and MOTONORI HOSHI 1

1 Biochemical Laboratory, Institute of Low Temperature Science, Hokkaido University, Sapporo 060, Japan

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.

Submitted on September 20, 1977

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Science. ISSN 0036-8075 (print), 1095-9203 (online)