Sequence Similarity in Nuclear and Mitochondrial Gene Regions in Plants
A 114-basepair fragment at 5′-upstream of the gene oee2-A from Nicotiana tabacum encoding the 23kD polypeptide of oxygen-evolving complex of photosystem II was found, through database search, to have high sequence similarity with segments in the mitochondrial genome of Oenothera, watermelon and wheat. This observation is supported by the Southern hybridization data. Repeated sequences were also found in the nuclear-mitochondrial homologous region, However, the function of these repeats is yet to be determined.
Key wordsDNA homologies nad nuclear-mitochondrial sequence similarity oxygen-evolving complex photosystem II
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