THE PROTEIN-ENCODING GENE T-URF13 IS NOT EDITED IN MAIZE MITOCHONDRIA

被引:55
作者
WARD, GC
LEVINGS, CS
机构
[1] Department of Genetics, North Carolina State University, Raleigh, 27695-7614, NC
关键词
URF13; ORF25; CMS-T; ORF221; RRN26;
D O I
10.1007/BF00037148
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
RNA editing of T-urf13, a gene specific to the mitochondria of cytoplasmic male-sterile, type-T (cms-T) maize, and an adjacent, cotranscribed gene orf221, 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 of orf221 in cms-T and normal cytoplasms is not increased.
引用
收藏
页码:1083 / 1088
页数:6
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