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ECB-ART-31439
Comp Biochem Physiol B 1991 Jan 01;991:71-6. doi: 10.1016/0305-0491(91)90009-3.
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Comparative studies on proteasomes (multicatalytic proteinases) isolated from spermatozoa and eggs of sea urchins.

Saitoh Y , Kawahara H , Miyamatsu H , Yokosawa H .


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1. Proteasomes (multicatalytic proteinases) have been purified from spermatozoa and eggs of sea urchins by successive chromatographies on DEAE-cellulose, hydroxylapatite, and Sepharose 6B. 2. The isolated sperm and egg proteasomes showed similar properties such as molecular weight (both 630,000) and multiple catalytic activity (pH optimum, substrate specificity, inhibitor-susceptibility and SDS-stimulation). 3. Distinct protein components were detected between sperm and egg proteasomes by SDS-polyacrylamide gel electrophoresis and immunoblot analysis using antibody against egg proteasome.

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Genes referenced: LOC100887844 LOC594261 psmg1