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A Novel Peptide with ribonuclease and translation-inhibitory activities from fruiting bodies of the oyster mushroom Pleurotus ostreatus

✍ Scribed by X. Y. Ye; T. B. Ng

Publisher: John Wiley and Sons
Year: 2002
Tongue: English
Weight: 134 KB
Volume: 8
Category: Article
ISSN: 1075-2617
DOI: 10.1002/psc.382

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✦ Synopsis

Abstract

From the fresh fruiting bodies of the oyster mushroom a peptide with a molecular weight of 9 kDa and demonstrating a novel N‐terminal sequence GPCYLVAFYESSGRR was isolated. The isolation procedure involved ion exchange chromatography on CM‐Sepharose and Mono S. The peptide was adsorbed on both types of chromatographic media. The peptide demonstrated a ribonuclease activity of 650 U/mg toward yeast transfer RNA. It inhibited cell‐free translation in a rabbit reticulocyte lysate system with an IC~50~ of 15 nM. Copyright © 2002 European Peptide Society and John Wiley & Sons, Ltd.

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