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首页> 外文期刊>Trends in Plant Science >DNA-binding domains of plant-specific transcription factors: structure, function, and evolution
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DNA-binding domains of plant-specific transcription factors: structure, function, and evolution

机译：植物特异性转录因子的DNA结合域：结构，功能和进化

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摘要

The families of the plant-specific transcription factors (TFs) are defined by their characteristic DNA-binding domains (DBDs), such as AP2/ERF, B3, NAC, SBP, and WRKY. Recently, three-dimensional structures of the DBDs, including those in complexes with DNA, were determined by NMR spectroscopy and X-ray crystallography. In this review we summarize the functional and evolutionary implications arising from structure analyses. The unexpected structural similarity between B3 and the noncatalytic DBD of the restriction endonuclease EcoRII allowed us to build structural models of the B3/ DNA complex. Most of the DBDs of plant-specific TFs are likely to have originated from endonucleases associated with transposable elements. After the DBDs have been established in unicellular eukaryotes, they experienced extensive plant-specific expansion, by acquiring new functions.
机译：植物特异性转录因子（TFs）的家族由其特征性的DNA结合域（DBD）定义，例如AP2 / ERF，B3，NAC，SBP和WRKY。最近，通过NMR光谱和X射线晶体学测定了DBD的三维结构，包括与DNA复合的那些。在这篇综述中，我们总结了结构分析产生的功能和进化意义。 B3和限制性内切酶EcoRII的非催化DBD之间意想不到的结构相似性使我们能够构建B3 / DNA复合物的结构模型。植物特异性TF的大多数DBD可能起源于与转座因子相关的核酸内切酶。在单细胞真核生物中建立了DBD之后，他们通过获取新功能经历了广泛的针对特定植物的扩展。

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