1887

Abstract

Summary

The translation of beet necrotic yellow vein virus RNA-1 was investigated in rabbit reticulocyte lysate and in wheatgerm extract using as messenger either RNA extracted from virions or a synthetic RNA-1 produced by transcription of full-length cDNA. In wheatgerm extract, RNA-1 directed the synthesis of approximately equivalent amounts of two long polypeptides of approximate 220000 (220K) and 240K. The size of the translation products of 3′-truncated RNA-1 transcripts suggested that synthesis of the 240K translation product was initiated at an AUG near the 5′ terminus, probably AUG(154), the first initiation codon in the RNA-1 sequence. The 220K polypeptide is initiated internally, at AUG(496). In rabbit reticulocyte lysate only the internal initiation codon, AUG(496), was used for initiation on full-length RNA-1 although AUG(154) was accessible on short 3′-truncated transcripts.

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/content/journal/jgv/10.1099/0022-1317-69-9-2359
1988-09-01
2022-01-16
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