(p)ppGpp Binding to the Bifunctional Enzyme RelSeq Increases Its Conformational Stability

IF 0.8 Q3 Engineering
D. S. Vinogradova, Z. A. Spiridonova, T. A. Antysheva, Zh. Yu. Sidorova, P. S. Kasatsky, E. A. Tolstyko, A. Paleskava, A. L. Konevega
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引用次数: 0

Abstract

Under adverse environmental conditions bacterial cells survive by activating the “stringent response,” which is mediated by the accumulation of small signaling alarmone molecules (p)ppGpp. The synthesis of (p)ppGpp from ATP and GDP/GTP and their hydrolysis to GDP/GTP and pyrophosphate are catalyzed by enzymes of the RSH (RelA/SpoT Homologue) family. Studying the complex allosteric mechanism underlying the bifunctional activity of these enzymes and the maintenance of intracellular levels of (p)ppGpp is a topical issue in modern science. In this work we determine the conformational stability and binding efficiency of the bifunctional homologue of the RSH family RelSeq385 with nucleotides depending on their concentration and the ionic composition of the reaction mixture.

Abstract Image

(p)ppGpp与双功能酶RelSeq结合增加其构象稳定性
在不利的环境条件下,细菌细胞通过激活“严格反应”存活,这是由小信号警报分子(p)ppGpp的积累介导的。由ATP和GDP/GTP合成(p)ppGpp及其水解为GDP/GTP和焦磷酸是由RSH (RelA/SpoT Homologue)家族酶催化的。研究这些酶的双功能活性和维持细胞内(p)ppGpp水平的复杂变构机制是现代科学的一个热门问题。在这项工作中,我们确定了RSH家族RelSeq385双功能同源物与核苷酸的构象稳定性和结合效率,这取决于它们的浓度和反应混合物的离子组成。
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来源期刊
Nanotechnologies in Russia
Nanotechnologies in Russia NANOSCIENCE & NANOTECHNOLOGY-
CiteScore
1.20
自引率
0.00%
发文量
0
期刊介绍: Nanobiotechnology Reports publishes interdisciplinary research articles on fundamental aspects of the structure and properties of nanoscale objects and nanomaterials, polymeric and bioorganic molecules, and supramolecular and biohybrid complexes, as well as articles that discuss technologies for their preparation and processing, and practical implementation of products, devices, and nature-like systems based on them. The journal publishes original articles and reviews that meet the highest scientific quality standards in the following areas of science and technology studies: self-organizing structures and nanoassemblies; nanostructures, including nanotubes; functional and structural nanomaterials; polymeric, bioorganic, and hybrid nanomaterials; devices and products based on nanomaterials and nanotechnology; nanobiology and genetics, and omics technologies; nanobiomedicine and nanopharmaceutics; nanoelectronics and neuromorphic computing systems; neurocognitive systems and technologies; nanophotonics; natural science methods in a study of cultural heritage items; metrology, standardization, and monitoring in nanotechnology.
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