Conklin P L, Hanson M R
Section of Genetics and Development, Cornell University, Ithaca, NY 14853.
Curr Genet. 1993 May-Jun;23(5-6):477-82. doi: 10.1007/BF00312638.
Repeated sequences known as recombination repeats are present in the majority of plant mitochondrial genomes. Two recombination repeat sequences from Petunia have been analyzed. The two repeats are virtually identical over 1.42 kb. One of the repeats is truncated and is likely to have arisen from a rare recombination event in the full-length repeat. Two sequence-blocks within the Petunia repeat are highly similar to sequences in the 5' flank of several plant mitochondrial genes. No sequence motifs are shared by the Petunia repeat and other sequenced plant mitochondrial recombination repeats, suggesting that the recombination occurs by an homologous, rather than a site-specific, mechanism.
被称为重组重复序列的重复序列存在于大多数植物线粒体基因组中。已经分析了矮牵牛的两个重组重复序列。这两个重复序列在1.42 kb的长度上几乎完全相同。其中一个重复序列被截断，可能是由全长重复序列中罕见的重组事件产生的。矮牵牛重复序列中的两个序列块与几种植物线粒体基因5'侧翼的序列高度相似。矮牵牛重复序列与其他已测序的植物线粒体重组重复序列没有共同的序列基序，这表明重组是通过同源机制而非位点特异性机制发生的。
