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回复关于"基因素乙化开关通过SWR-C重塑酶调节H2A.Z沉积"的评论

Shinya Watanabe¹, Craig L Peterson²

¹Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA.

Science (New York, N.Y.)

|July 28, 2016

概括

染色体重塑酶INO80C和SWR1C在H3-K56Q基质中用H2A替换H2A. 通过移动转移试验证实了这一生化观察结果,证实了先前的发现.

科学领域:

分子生物学
染色体生物学
生物化学

背景情况:

INO80和SWR1染色体重塑复合体参与了细胞核动力学.
像H2A.Z和H3的基因组变异,如K56Q在DNA修复和基因调节中起着至关重要的作用.
之前的研究表明,INO80C和SWR1C可以催化H2A.Z与H2A的交换.

研究的目的:

为了解决INO80C和SWR1C对H2A.Z/H2A交换的生物化学观测报告的失败.
验证INO80C和SWR1C在H3-K56Q核体中的催化活性.
通过使用另一种方法来证实发现.

主要方法:

迪默交换试验 (最初报告的情况).
移动性转移试验 (由Wang等人开发和使用. ) 的情况.
生物化学测试以评估染色体重塑酶的活性.

主要成果:

首次观察到INO80C和SWR1C在H3-K56Q基板上催化H2A.Z到H2A的替代被成功地回顾.
报告小组也采用了这种方法 (Wang et al. ) 的情况.
这项验证解决了先前对二聚物交换试验技术限制的担忧.

结论:

在H2A.Z/H2A交换中的INO80C和SWR1C的催化活性在H3-K56Q核体上是强大的和可重复的.
移动性转移试验提供了一种可靠的方法来评估这种特定的染色体重塑活性.
这些发现加强了涉及基因组变异和修改的核细胞重塑机制的理解.

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