ACETYLCHOLINESTERASE IN BULL SPERMATOZOA
Author:
- Leonard NelsonLNLeonard Nelson
- 1 February 1964
- journal article
- research article
- Published by Oxford University Press (OUP) in Reproduction
- Vol. 7 (1) , 65-71
Abstract
Summary.: Acetylcholinesterase occurs in the head, midpiece and tail fractions of sonically disrupted bull epididymal spermatozoa. The enzyme exhibits the characteristic substrate concentration optimum; 1·5 × 10-5 m-eserine competitively inhibits the hydrolysis of the acetylcholine. The specific activity of the tail fraction is about five times that of the head fraction; in both fractions, the rate of hydrolysis of butyrylcholine is about 15% and of benzoylcholine is about 5 to 8% that of acetylcholine. The enzyme may be involved in the control of coordination and propagation of the flagellar wave.Keywords
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