Human semen ribonuclease. Location, properties and inhibition by sodium dodecyl sulfate, zinc sulfate and EDTA.
Optimal conditions were established for RNase activity measurement. The enzyme was measured in human seminal plasma as well as in spermatozoa. Results suggest that sperm enzyme may come from seminal plasma contamination and that RNase may be used as a marker enzyme for seminal plasma contamination. Sodium dodecylsulfate, a reagent utilized to produce the solubilization of the spermatozoa, produced a very strong inhibition of the RNase at low concentrations (530 muM). Zinc sulfate and EDTA also produced inhibition of the RNase activity. Such inhibition may be very useful in future studies of RNA metabolism in human spermatozoa.
D004229:Dithiothreitol / Q000494:pharmacology; D004492:Edetic Acid / Q000494:pharmacology*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008297:Male; D008628:Mercury / Q000494:pharmacology; D012260:Ribonucleases / Q000378:metabolism; D012661:Semen / Q000201:enzymology*; D012967:Sodium Dodecyl Sulfate / Q000494:pharmacology*; D013094:Spermatozoa / Q000201:enzymology; D015032:Zinc / Q000494:pharmacology*
D012967:Sodium Dodecyl Sulfate; D004492:Edetic Acid; D012260:Ribonucleases; D008628:Mercury; D015032:Zinc; D004229:Dithiothreitol