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首页> 外文期刊>The FEBS journal >Death inducer obliterator protein 1 in the context of DNA regulation - Sequence analyses of distant homologues point to a novel functional role
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Death inducer obliterator protein 1 in the context of DNA regulation - Sequence analyses of distant homologues point to a novel functional role

机译:DNA调控背景下的死亡诱导物闭塞蛋白1-遥远同源物的序列分析指出了一种新的功能

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摘要

Death inducer obliterator protein 1 [DIDO1; also termed DIO-1 and death-associated transcription factor 1 (DATF-1)] is encoded by a gene thus far described only in higher vertebrates. Current gene ontology descriptions for this gene assign its function to an apoptosis-related process. The protein presents distinct splice variants and is distributed ubiquitously. Exhaustive sequence analyses of all DIDO variants identify distant homologues in yeast and other organisms. These homologues have a role in DNA regulation and chromatin stability, and form part of higher complexes linked to active chromatin. Further domain composition analyses performed in the context of related homologues suggest that DIDO-induced apoptosis is a secondary effect. Gene-targeted mice show alterations that include lagging chromosomes, and overexpression of the gene generates asymmetric nuclear divisions. Here we describe the analysis of these eukaryote-restricted proteins and propose a novel, DNA regulatory function for the DIDO protein in mammals.
机译:死亡诱导物闭塞蛋白1 [DIDO1;也被称为DIO-1和死亡相关转录因子1(DATF-1)]的基因迄今仅在高等脊椎动物中描述过。该基因的当前基因本体论描述将其功能分配给凋亡相关过程。该蛋白质呈现出不同的剪接变体,并且无处不在。所有DIDO变体的详尽序列分析可确定酵母和其他生物中的遥远同源物。这些同源物在DNA调节和染色质稳定性中起作用,并形成与活性染色质连接的高级复合物的一部分。在相关同源物的上下文中进行的进一步的域组成分析表明,DIDO诱导的凋亡是次要作用。以基因为靶标的小鼠显示出包括落后染色体的改变,并且基因的过表达产生不对称的核分裂。在这里,我们描述了对这些真核生物限制性蛋白的分析,并提出了哺乳动物中DIDO蛋白的新型DNA调节功能。

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