Abstract

Microsomal vesicle were centrifuged through sucrose density gradients containing deoxycholate. With 0.15% detergent electron transport enzymes and phosphatases could be separated. Increasing the deoxycholate concentration to 0.19% resulted in separation of the microsomal material into five bands containing (in order from the top of the gradient) adenosine monophosphatase, inosine diphosphatase and some glucose-6-phosphatase (band 1); NADH-linked (band 2) and NADPH-linked (band 3) electron transport enzymes; and glucose-6-phosphatase (bands 4 and 5). It appears that enzymes are arranged in specialized patchers in the microsomal membrane.

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