Oligomerization of the IHF Protein in the Presence of Metal Cations

IF 0.6 4区 材料科学 Q4 CRYSTALLOGRAPHY Crystallography Reports Pub Date : 2024-06-06 DOI:10.1134/S1063774524600133
A. M. Gordienko, L. A. Dadinova, M. V. Petoukhov, A. A. Mozhaev, V. A. Manuvera, V. N. Lazarev, E. V. Shtykova
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Abstract

The oligomeric state of the nucleoid-associated protein IHF (integration host factor) plays a significant role in the organization and compaction of the bacterial nucleoid and also in the evolution of bacterial resistance to unfavorable environmental conditions, in particular to antibiotics. Although IHF was identified more than 25 years ago, the molecular mechanisms of its participation in these processes are poorly understood. Using small-angle X-ray scattering, it was demonstrated for the first time that there are different oligomeric states of IHF in an aqueous medium depending on the presence of metal cations. It was found that the presence of Mg2+ and K+ ions hinders the formation of high-order oligomers of IHF. The results of this study may be useful in the development of strategies against bacterial resistance to drugs.

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金属阳离子存在时 IHF 蛋白的寡聚化
摘要 核团相关蛋白 IHF(整合宿主因子)的寡聚状态在细菌核团的组织和压实以及细菌对不利环境条件(尤其是抗生素)的抗性进化中起着重要作用。虽然 IHF 早在 25 年前就已被发现,但人们对其参与这些过程的分子机制却知之甚少。利用小角 X 射线散射法,首次证明了 IHF 在水介质中存在不同的低聚物状态,这取决于金属阳离子的存在。研究发现,Mg2+ 和 K+ 离子的存在阻碍了 IHF 高阶低聚物的形成。这项研究的结果可能有助于开发针对细菌耐药性的策略。
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来源期刊
Crystallography Reports
Crystallography Reports 化学-晶体学
CiteScore
1.10
自引率
28.60%
发文量
96
审稿时长
4-8 weeks
期刊介绍: Crystallography Reports is a journal that publishes original articles short communications, and reviews on various aspects of crystallography: diffraction and scattering of X-rays, electrons, and neutrons, determination of crystal structure of inorganic and organic substances, including proteins and other biological substances; UV-VIS and IR spectroscopy; growth, imperfect structure and physical properties of crystals; thin films, liquid crystals, nanomaterials, partially disordered systems, and the methods of studies.
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