Lj. Yang et al., MUTATIONAL ANALYSIS OF THE POTATO-VIRUS-Y 5'-UNTRANSLATED REGION FOR ALTERATION IN TRANSLATIONAL ENHANCEMENT IN TOBACCO PROTOPLASTS, Bioscience, biotechnology, and biochemistry, 61(12), 1997, pp. 2131-2133
The 185 nucleotide 5' untranslated region (5'UTR) of potato virus Y or
dinary strain (PVY-O) showed translation-enhancing activity on the bet
a-glucuronidase (GUS) gene in tobacco protoplasts. Mutational analysis
of the 5'UTR was done to find sequence motifs necessary for the enhan
cement. Deletions within the 1-130 nucleotide region of 5'UTR stimulat
ed the GUS expression in some cases, while the GUS activity declined w
ith deletions in the 131-185 nucleotide region. The results indicated
that the last 55 nucleotides of PVY-O 5'UTR might play the much import
ant role in the translational enhancement in plant cells.