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Identification and characterization of over 100 mitochondrial ribosomal protein pseudogenes in the human genome small star, filled.

机译:鉴定和鉴定了人类基因组小星中的100多个线粒体核糖体蛋白假基因。

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摘要

The human (nuclear) genome encodes at least 79 mitochondrial ribosomal proteins (MRPs), which are imported into the mitochondria. Using a comprehensive approach, we find 41 of these give rise to 120 pseudogenes in the genome. The majority of the MRP pseudogenes are of processed origin and can be aligned to match the entire coding region of the functional MRP mRNAs. One processed pseudogene was found to have originated from an alternatively spliced mRNA transcript. We also found two duplicated pseudogenes that are transcribed in the cell as confirmed by screening the human EST database. We observed a significant correlation between the number of processed pseudogenes and the gene CDS length (R = -0.40; p < 0.001), i.e., the relatively shorter genes tend to have more processed pseudogenes. There is also a weaker correlation between the number of processed pseudogenes and the gene CDS GC content. Our study provides a catalogue of human MRP pseudogenes, which will be useful in the study of functional MRP genes. It also provides a molecular record of the evolution of these genes. More details are available at http://pseudogene.org/.
机译:人(核)基因组编码至少79个线粒体核糖体蛋白(MRP),这些蛋白被导入线粒体。使用一种全面的方法,我们发现其中的41个在基因组中产生了120个假基因。大多数MRP假基因都是经过加工的,可以进行比对以匹配功能性MRP mRNA的整个编码区。发现一个经过加工的假基因源自选择性剪接的mRNA转录本。通过筛选人类EST数据库,我们还发现了两个重复的假基因在细胞中转录。我们观察到加工的假基因的数量与基因CDS长度之间存在显着的相关性(R = -0.40; p <0.001),即相对较短的基因往往具有更多的加工假基因。处理的假基因数量与基因CDS GC含量之间也存在较弱的相关性。我们的研究提供了人类MRP假基因的目录,这将对功能性MRP基因的研究有用。它还提供了这些基因进化的分子记录。有关更多详细信息,请访问http://pseudogene.org/。

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