Erny C, Schoumacher F, Godefroy-Colburn T, Stussi-Garaud C. Nucleic acid binding properties of the 92-kDa replicase subunit of alfalfa mosaic virus produced in yeast.
EUROPEAN JOURNAL OF BIOCHEMISTRY 1992;
203:167-72. [PMID:
1730222 DOI:
10.1111/j.1432-1033.1992.tb19842.x]
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Abstract
The 92-kDa non-structural protein of alfalfa mosaic virus (one of the replicase subunits) was synthesized by Saccharomyces cerevisiae transformed with a recombinant expression vector. The yeast-expressed protein had the immunological and size characteristics of the naturally made viral protein. It was partially purified and its nucleic acid binding properties were tested by gel-retardation electrophoresis and nitrocellulose adsorption. The protein interacted with single-stranded RNA, double-stranded RNA and double-stranded DNA in a salt-dependent manner, with a slight preference for RNA. These properties may be related to its putative function as a core RNA polymerase.
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