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Comparative Analysis of SWIRM Domain-Containing Proteins in Plants

机译：植物中含有SWIRM结构域蛋白的比较分析

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摘要

Chromatin-remodeling complexes affect gene expression by using the energy of ATP hydrolysis to locally disrupt or alter the association of histones with DNA. SWIRM (Swi3p, Rsc8p, and Moira) domain is an alpha-helical domain of about 85 residues in chromosomal proteins. SWIRM domain-containing proteins make up large multisubunit complexes by interacting with other chromatin modification factors and may have an important function in plants. However, little is known about SWIRM domain-containing proteins in plants. In this study, 67 SWIRM domain-containing proteins from 6 plant species were identified and analyzed. Plant SWIRM domain proteins can be divided into three distinct types: Swi-type, LSD1-type, and Ada2-type. Generally, the SWIRM domain forms a helix-turn-helix motif commonly found in DNA-binding proteins. The genes encoding SWIRM domain proteins inOryza sativaare widely expressed, especially in pistils. In addition,OsCHB701andOsHDMA701were downregulated by cold stress, whereasOsHDMA701andOsHDMA702were significantly induced by heat stress. These observations indicate that SWIRM domain proteins may play an essential role in plant development and plant responses to environmental stress.
机译：染色质重塑复合物通过利用ATP水解的能量来局部破坏或改变组蛋白与DNA的结合，从而影响基因表达。 SWIRM（Swi3p，Rsc8p和Moira）结构域是染色体蛋白中约85个残基的α螺旋结构域。含有SWIRM域的蛋白质通过与其他染色质修饰因子相互作用而构成大型的多亚基复合物，并且在植物中可能具有重要的功能。然而，关于植物中含有SWIRM结构域的蛋白质知之甚少。在这项研究中，鉴定并分析了来自6种植物的67种含有SWIRM域的蛋白质。植物SWIRM域蛋白可以分为三种不同的类型：Swi型，LSD1型和Ada2型。通常，SWIRM结构域形成通常在DNA结合蛋白中发现的螺旋-转-螺旋基序。在稻草中编码SWIRM结构域蛋白的基因被广泛表达，尤其是在雌蕊中。此外，OsCHB701和OsHDMA701被冷胁迫下调，而OsHDMA701和OsHDMA702被热胁迫显着诱导。这些观察结果表明，SWIRM结构域蛋白可能在植物发育和植物对环境胁迫的反应中起重要作用。

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