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The filamentous bacteriophage cf infects the bacterium Xanthomonas campestris pv. citri. Northern blot analysis with probes derived from various restriction fragments of cf replicative form (RF) DNA has revealed the presence of five major phage-specific transcripts in infected cells. Four of these transcripts were shown to be derived from the region of the cf genome extending from gene II to gene...
Oligonucleotides were inserted into the Lp3 region of a hepatitis delta virus (HDV) cis-cleaving ribozyme and the effect of Lp3 enlargement on ribozyme folding was examined by assaying the activity of each mutant. The location of insertion and the sequence of the inserted oligonucleotide had distinct effects on ribozyme activity, and the HDV ribozyme was capable of adopting the active structure for...
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