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Organization of ISPg5. The position of the insert DNA in clone 14 is shown, along with the following features of ISPg5: DR (3-bp direct repeat), LIR (left inverted repeat), RIR (right inverted repeat), ORF1, and three possible versions of ORF2, including a fusion with ORF1 caused by frameshifting. The nucleotide and amino acid sequences of the fusion region are shown, with the frameshift-promoting region and the stop codon for ORF1 indicated in bold.
