Abstract
ENZYMES capable of conjugating steroids to form the sulphate esters have been found only in the liver1,2. Although unfractionated liver preparations are able to sulphate a wide range of steroids, Nose and Lipmann3 were able to separate an enzyme fraction which sulphated œstrone from one which sulphated dehydroisoandro-sterone. A partial separation of the activities towards œstrone and p-nitrophenol was obtained. Results indicated that several rather specific steroid sulphokinases exist. Phenol sulphokinase, on the other hand, is relatively unspecific and has been found in such tissues as liver, kidney, intestinal mucosa and granulation tissue4. In the work reported here, extracts of chick embryonic cartilage were found capable of sulphating cestrogenic steroids but not a variety of other steroids tested.
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