Virtual Screening Targeting Dimerization Signals of Two Mycoplasma HU Proteins Revealed Different Types of Inhibitors Interacting with Common Binding Determinants
- Authors: Agapova Y.K.1, Talyzina A.A.2, Altukhov D.A.1, Lavrentiev A.L.3, Timofeev V.I.1,4, Rakitina T.V.1,5
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Affiliations:
- NBIC Centre, National Research Centre “Kurchatov Institute”
- Moscow Institute of Physics and Technology
- Central Research Institute of Mechanical Engineering (TsNIIMash)
- Shubnikov Institute of Crystallography of Federal Scientific Research Centre “Crystallography and Photonics,” Russian Academy of Sciences
- Shemyakin–Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences
- Issue: Vol 64, No 4 (2019)
- Pages: 602-607
- Section: Structure of Macromolecular Compounds
- URL: https://journals.rcsi.science/1063-7745/article/view/194096
- DOI: https://doi.org/10.1134/S1063774519030027
- ID: 194096
Cite item
Abstract
DNA-Binding HU proteins are critical to the maintenance of the nucleoid structure and are promising pharmacological targets for the design of new antibiotics. The virtual screening for low-molecular-weight compounds capable of specifically interacting with the dimerization signals of two mycoplasma HU proteins was performed. The stability of target protein–ligand complexes was evaluated by molecular dynamics simulation. An analysis of the amino-acid environment of the ligands shows that inhibitors targeting the conserved amino-acid sequence, the so-called dimerization signal, which is involved in the formation of HU dimers and the maintenance of their stability and is located in an interdimer beta-sheet, have the second binding site in the alpha-helical domain. The binding determinants of inhibitors at the dimer interfaces of the proteins are identical and are independent of the amino-acid sequence. Consequently, HU proteins have two sites for the formation of the dimer interface, which should be taken into account in the design of inhibitors of dimerization.
About the authors
Yu. K. Agapova
NBIC Centre, National Research Centre “Kurchatov Institute”
Author for correspondence.
Email: agapova.jk@gmail.com
Russian Federation, Moscow, 123098
A. A. Talyzina
Moscow Institute of Physics and Technology
Author for correspondence.
Email: anna.talyzina@phystech.edu
Russian Federation, Dolgoprudnyi, Moscow oblast, 141701
D. A. Altukhov
NBIC Centre, National Research Centre “Kurchatov Institute”
Email: taniarakitina@yahoo.com
Russian Federation, Moscow, 123098
A. L. Lavrentiev
Central Research Institute of Mechanical Engineering (TsNIIMash)
Email: taniarakitina@yahoo.com
Russian Federation, Korolev, Moscow oblast, 141701
V. I. Timofeev
NBIC Centre, National Research Centre “Kurchatov Institute”; Shubnikov Institute of Crystallography of Federal Scientific Research Centre “Crystallography and Photonics,”Russian Academy of Sciences
Email: taniarakitina@yahoo.com
Russian Federation, Moscow, 123098; Moscow, 119333
T. V. Rakitina
NBIC Centre, National Research Centre “Kurchatov Institute”; Shemyakin–Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences
Author for correspondence.
Email: taniarakitina@yahoo.com
Russian Federation, Moscow, 123098; Moscow, 117997