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Biology of Reproduction, Vol 25, 363-369, Copyright © 1981 by Society for the Study of Reproduction
1 Department of Biochemistry,
University of Georgia,
Athens, Georgia 30602 The distribution of lysosomal hydrolases in sperm acrosomes and seminal plasma was studied in
semen samples (n = 9) obtained from six chimpanzees by automasturbation. Most of the hydrolytic
enzymes can be extracted by the MgCl2, step from spermatozoa.
2 Reproductive Biology Section,
Yerkes Regional Primate Research Center,
Emory University,
Atlanta, Georgia 30322
-N-Acetylhexosaminidase and
hyaluronidase showed highest specific activity in the MgCl2 extract. The specific activities of
arylsulfatase,
-glucuronidase, and
-L-fucosidase were 4-8 times higher in the detergent extract.
The seminal plasma showed high activities of acid and alkaline phosphatases and low specific
activity of
-galactosidase. The acidic forms of these enzymes predominated in the seminal plasma
as shown both by the DEAE-cellulose chromatography and polyacrylamide gel electrophoresis.
Concanavalin A Sepharose chromatography confirmed the glycoprotein nature of these enzymes
and gave 2-25-fold purification.
Note:
ACKNOWLEDGMENTS
The authors thank Mrs. Elaine Foster for her
skillful technical assistance and Mr. Jim Faulkner for
providing chimpanzee semen. The work was supported by NIH Grants HD 14947-01 and RR00165,
and by Ford Foundation Grant 690-0645.
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