1887

Abstract

Summary: was treated with a mixture of toluene and ethanol to make it permeable to small molecules. This treatment unmasked a glucan synthetase activity which was assayed with UDP-[U-C]glucose. About 60% of the polymer formed was (1→3)glucan. No labelled lipids were detected.

The C incorporated was recovered in a particulate membrane preparation isolated by differential centrifugation. When the particles themselves were assayed for glucosyl transfer activity none was found.

The toluene-treated preparations also catalysed the transfer of mannosyl residues from GDP-mannose to polymeric materials by a process independent of glucosyl transfer.

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1975-09-01
2021-05-16
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