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首页> 外文期刊>Trends in Plant Science >Competitive inhibition of transcription factors by small interfering peptides
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Competitive inhibition of transcription factors by small interfering peptides

机译:小干扰肽竞争性抑制转录因子

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Combinatorial assortment by dynamic dimer formation diversifies gene transcriptional specificities of transcription factors. A similar but biochemically distinct mechanism is competitive inhibition in which small proteins act as negative regulators by competitively forming nonfunctional heterodimers with specific transcription factors. The most extensively studied is the negative regulation of auxin response factors by AUXIN/INDOLE-3-ACETIC ACID repressors. Similarly, Arabidopsis thaliana (Arabidopsis) little zipper and mini finger proteins act as competitive inhibitors of target transcription factors. Competitive inhibitors are also generated by alternative splicing and controlled proteolytic processing. Because they provide a way of attenuating transcription factors we propose to call them small interfering peptides (siPEPs). The siPEP-mediated strategy could be applied to deactivate specific transcription factors in crop plants.
机译:通过动态二聚体形成的组合分类使转录因子的基因转录特异性多样化。一个相似但生化上不同的机制是竞争性抑制,其中小蛋白通过竞争性形成具有特定转录因子的非功能性异二聚体充当负调节剂。研究最广泛的是AUXIN / INDOLE-3-ACETIC阻抑剂对生长素反应因子的负调控。同样,拟南芥(Arabidopsis)小拉链和小指蛋白可作为目标转录因子的竞争性抑制剂。竞争性抑制剂也可以通过选择性剪接和受控的蛋白水解过程产生。因为它们提供了减弱转录因子的方法,所以我们建议将它们称为小干扰肽(siPEP)。 siPEP介导的策略可用于灭活作物中的特定转录因子。

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