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Summary of construct analysis. The UDE maps to a region within the 5′ end to nucleotide +92 of the PPR1 mRNA. Nucleotides +93 to +2715 of the PPR1 ORF and the PPR1 3′-UTR do not contain an UDE. The schematic diagrams represent PPR1 mRNA (top) and the relevant portions of PPR1 mRNA in the five constructs used to map the location of the UDE. The diagrams are numbered relative to the PPR1 transcription start point at +1.
