Department of Plant Biology, University of Minnesota, St Paul, MN, USA.
FEMS Microbiol Lett. 2010 Jul 1;308(1):29-34. doi: 10.1111/j.1574-6968.2010.01979.x. Epub 2010 Apr 8.
We present the 91,500 bp mitochondrial genome of the wood-degrading basidiomycete Trametes cingulata and compare it with the mitochondrial genomes of five additional Basidiomycota species. The Trametes mitochondrial genome encodes 15 proteins, 25 tRNAs and the small and large rRNAs. All of the genes, except one tRNA, are found on the same DNA strand. Several additional ORFs have also been identified; however, their sequences have not been conserved across the species we compared and they show no similarity to any known gene, suggesting that they may not correspond to authentic genes. The presence of endonuclease-like sequences in introns suggests a mechanism that explains the diversity of mitochondrial genome sizes that are unrelated to the gene content.
我们呈现了木质腐朽担子菌薄环侧耳的 91500bp 线粒体基因组，并将其与另外五个担子菌物种的线粒体基因组进行了比较。薄环侧耳的线粒体基因组编码 15 种蛋白质、25 种 tRNA 以及小和大亚 rRNA。除了一个 tRNA 之外，所有的基因都位于同一条 DNA 链上。还鉴定出了几个额外的 ORF；然而，它们的序列在我们比较的物种中没有保守，也与任何已知的基因没有相似性，这表明它们可能不是真正的基因。内含子中存在内切酶样序列，这表明了一种机制可以解释与基因含量无关的线粒体基因组大小多样性。
