植物HMGB家族的高迁移率蛋白:动态染色质调节剂

Klaus D. Grasser, Dorte Launholt, Marion Grasser
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引用次数: 50

摘要

在植物中,HMGB家族的染色体高迁移率组(HMG)蛋白通常包含一个中央HMG-box dna结合结构域,其两侧是碱性n端和酸性c端结构域。HMGB蛋白是细胞核中丰富的高流动性蛋白,影响染色质结构,增强结合位点对调节因子的可及性。由于其显著的DNA弯曲活性,HMGB蛋白可以增加DNA的结构灵活性,促进控制DNA依赖过程(包括转录)的核蛋白复合物的组装。因此,HMGB家族的成员作为染色质功能的多功能调节剂。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
High mobility group proteins of the plant HMGB family: Dynamic chromatin modulators

In plants, the chromosomal high mobility group (HMG) proteins of the HMGB family typically contain a central HMG-box DNA-binding domain that is flanked by a basic N-terminal and an acidic C-terminal domain. The HMGB proteins are abundant and highly mobile proteins in the cell nucleus that influence chromatin structure and enhance the accessibility of binding sites to regulatory factors. Due to their remarkable DNA bending activity, HMGB proteins can increase the structural flexibility of DNA, promoting the assembly of nucleoprotein complexes that control DNA-dependent processes including transcription. Therefore, members of the HMGB family act as versatile modulators of chromatin function.

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