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Transfer of xylose to steroids by rabbit liver microsomes
Abstract:
Rabbit liver microsomal preparations can transfer xylose from UDP-xylose to estron, 17alpha-estradiol, and 17beta-estradiol, and, in poorer yield, to diethylstilbestrol and p-nitrophenol. No transfer of xylose to estriol, testosterone, epitestosterone or 17alpha-estradiol 3-glucuronide could be demonstrated. The xyloside of [6,7-3H]estrone which was formed by liver microsomes crystallized to constant specific activity with estrone beta-D-xylopyranoside, the chemical preparation of which is described.
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