The protein-encoding gene T-urf13 is not edited in maize mitochondria |
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Authors: | Gerty Cori Ward Charles S. Levings III |
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Affiliation: | (1) Department of Genetics, North Carolina State University, Box 7614, 27695-7614 Raleigh, NC, USA |
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Abstract: | RNA editing of T-urf13, a gene specific to the mitochondria of cytoplasmic male-sterile, type-T (cms-T) maize, and an adjacent, cotranscribed geneorf221, have been studied by cDNA sequencing. No editing was detected in 22 cDNA clones. This is the only report of a polypeptide-encoding gene in higher-plant mitochondria that is not edited. T-urf13 may not be edited because it is derived largely from the coding and flanking regions, which are rarely edited, of a ribosomal RNA gene.orf221 is edited; however, the similarity between the predicted amino acid sequences oforf221 incms-T and normal cytoplasms is not increased. |
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