评估共同演变的PHD手指残留物的功能作用
Shraddha Basu1, Ujwal Subedi1, Marco Tonelli2
1Department of Chemistry & Biochemistry, South Dakota State University, Brookings, South Dakota, USA.
Protein science : a publication of the Protein Society
|June 26, 2024
概括
共同演变的残留物对于蛋白质结构预测至关重要,在蛋白质折叠和稳定性中起着不同的作用. 实验和计算方法揭示了具体的贡献,有助于理解蛋白质家族.
科学领域:
- 生物化学 生物化学
- 结构生物学 结构生物学
- 计算生物学 计算生物学
背景情况:
- 使用共同演变的残留约束的in silico方法已经推进了蛋白质结构预测.
- 这些共同演变的残留物的功能和物理作用需要实验验验证.
- PHD指模块,一个基因素读取器,表现出特定亚型的共同演变残留物.
研究的目的:
- 通过实验评估同进化残留物对蛋白质折叠和稳定性的贡献.
- 为了澄清不同PHD手指亚型中同进化的残留物的特定作用.
- 开发和验证用于分析残留物贡献的综合计算和实验策略.
主要方法:
- 使用蛋白解和热展开测定对野生类型和突变PHD指蛋白进行实验分析.
- 计算序列设计以识别折叠关键的残留物.
- 单个蛋白质结构的基于生成模型的能量估计.
主要成果:
- 协同演变的残留物显示出对蛋白质稳定性和折叠的各种贡献,尽管有强烈的in silico约束.
- 具有显著的共同进化约束的残留位置影响了某些PHD手指亚型的稳定性,而不是其他类型.
- 计算序列设计和能量估计成功地区分了有助于折叠的共同演变残留物和不有助于折叠的残留物.
- 实验验证证证实了关于折叠关键残留物的计算分析结果.
结论:
- 协同演变的残留物在蛋白质折叠和稳定性中扮演着取决于背景的角色.
- 实验分析,序列设计和能量估计的综合方法为剖析残留物贡献提供了一个强大的策略.
- 该方法可用于了解其他大型蛋白质家族中的残留物的重要性.
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