Crystal structure analysis of oxygen-induced degradation occurring in rsCherry

IF 1.1 4区 生物学 Q4 BIOCHEMICAL RESEARCH METHODS
Thi Yen Hang Bui, Ludovic Pecqueur, Peter Dedecker, Luc Van Meervelt
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引用次数: 0

Abstract

rsCherry was one of the first reversibly photoswitchable variants to be developed from mCherry. However, its practical applications have been limited due to several inherent drawbacks. We have recently shown that the purified protein undergoes oxygen-induced chromophore degradation in solution, resulting in the progressive loss of its fluorescence and color. In this work, we present four crystal structures of rsCherry that exhibit varying degrees of degradation. Our structural analysis indicates that oxygen-induced degradation of rsCherry predominantly affects the chromophore without altering the protein backbone. Changes were only observed in the conformation of Lys70, confirming the crucial role of this residue in chromophore damage in rsCherry. Overall, this study provides valuable insights into the structural changes triggered by oxygen exposure in rsCherry, offering suggestions for the development of stable red fluorescent proteins with improved resistance to oxidative damage.

Abstract Image

rcherry中氧诱导降解的晶体结构分析。
rcherry是由mCherry发展而来的第一个可逆光开关变种。然而,由于一些固有的缺陷,它的实际应用受到了限制。我们最近的研究表明,纯化蛋白在溶液中经历氧诱导的发色团降解,导致其荧光和颜色的逐渐丧失。在这项工作中,我们提出了四种表现出不同程度降解的rsCherry晶体结构。我们的结构分析表明,氧诱导的rcherry降解主要影响发色团而不改变蛋白质主干。仅观察到Lys70构象的变化,证实了该残基在rcherry发色团损伤中的关键作用。综上所述,本研究为研究氧暴露引发的红樱桃结构变化提供了有价值的见解,为开发稳定的、抗氧化损伤的红色荧光蛋白提供了建议。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Acta crystallographica. Section F, Structural biology communications
Acta crystallographica. Section F, Structural biology communications BIOCHEMICAL RESEARCH METHODSBIOCHEMISTRY &-BIOCHEMISTRY & MOLECULAR BIOLOGY
CiteScore
1.90
自引率
0.00%
发文量
95
期刊介绍: Acta Crystallographica Section F is a rapid structural biology communications journal. Articles on any aspect of structural biology, including structures determined using high-throughput methods or from iterative studies such as those used in the pharmaceutical industry, are welcomed by the journal. The journal offers the option of open access, and all communications benefit from unlimited free use of colour illustrations and no page charges. Authors are encouraged to submit multimedia content for publication with their articles. Acta Cryst. F has a dedicated online tool called publBio that is designed to make the preparation and submission of articles easier for authors.
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