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Shvetsov AV, Lebedev DV, Zabrodskaya YA, Shaldzhyan AA, Egorova MA, Vinogradova DS, Konevega AL, Gorshkov AN, Ramsay ES, Radulescu A, Sergeeva MV, Plotnikova MA, Komissarov AB, Taraskin AS, Lebedev KI, Garmay YP, Kuznetsov VV, Isaev-Ivanov VV, Vasin AV, Tsybalova LM, Egorov VV. Cold and distant: structural features of the nucleoprotein complex of a cold-adapted influenza A virus strain. J Biomol Struct Dyn 2020; 39:4375-4384. [PMID: 32490728 DOI: 10.1080/07391102.2020.1776636] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Two influenza A nucleoprotein variants (wild-type: G102R; and mutant: G102R and E292G) were studied with regard to macro-molecular interactions in oligomeric form (24-mers). The E292G mutation has been previously shown to provide cold adaptation. Molecular dynamics simulations of these complexes and trajectory analysis showed that the most significant difference between the obtained models was distance between nucleoprotein complex strands. The isolated complexes of two ribonucleoprotein variants were characterized by transmission electron microscopy and differential scanning fluorimetry (DSF). Presence of the E292G substitution was shown by DSF to affect nucleoprotein complex melting temperature. In the filament interface peptide model, it was shown that the peptide corresponding in primary structure to the wild-type NP (SGYDFEREGYS) is prone to temperature-dependent self-association, unlike the peptide corresponding to E292G substitution (SGYDFGREGYS). It was also shown that the SGYDFEREGYS peptide is capable of interacting with a monomeric nucleoprotein (wild type); this interaction's equilibrium dissociation constant is five orders of magnitude lower than for the SGYDFGREGYS peptide. Using small-angle neutron scattering (SANS), the supramolecular structures of isolated complexes of these proteins were studied at temperatures of 15, 32, and 37 °C. SANS data show that the structures of the studied complexes at elevated temperature differ from the rod-like particle model and react differently to temperature changes. The data suggest that the mechanism behind cold adaptation with E292G is associated with a weakening of the interaction between strands of the ribonucleoprotein complex and, as a result, the appearance of inter-chain interface flexibility necessary for complex function at low temperature.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- A V Shvetsov
- Petersburg Nuclear Physics Institute named by B. P, Konstantinov of National Research Center "Kurchatov Institute", Gatchina, Russia.,Peter the Great St. Petersburg Polytechnic University, St. Petersburg, Russia.,National Research Centre Kurchatov Institute, Moscow, Russia
| | - D V Lebedev
- Petersburg Nuclear Physics Institute named by B. P, Konstantinov of National Research Center "Kurchatov Institute", Gatchina, Russia.,National Research Centre Kurchatov Institute, Moscow, Russia
| | - Y A Zabrodskaya
- Petersburg Nuclear Physics Institute named by B. P, Konstantinov of National Research Center "Kurchatov Institute", Gatchina, Russia.,Peter the Great St. Petersburg Polytechnic University, St. Petersburg, Russia.,National Research Centre Kurchatov Institute, Moscow, Russia.,Smorodintsev Research Institute of Influenza, Russian Ministry of Health, St. Petersburg, Russia
| | - A A Shaldzhyan
- Petersburg Nuclear Physics Institute named by B. P, Konstantinov of National Research Center "Kurchatov Institute", Gatchina, Russia.,Smorodintsev Research Institute of Influenza, Russian Ministry of Health, St. Petersburg, Russia
| | - M A Egorova
- Smorodintsev Research Institute of Influenza, Russian Ministry of Health, St. Petersburg, Russia
| | - D S Vinogradova
- Petersburg Nuclear Physics Institute named by B. P, Konstantinov of National Research Center "Kurchatov Institute", Gatchina, Russia.,NanoTemper Technologies Rus, St. Petersburg, Russia
| | - A L Konevega
- Petersburg Nuclear Physics Institute named by B. P, Konstantinov of National Research Center "Kurchatov Institute", Gatchina, Russia.,Peter the Great St. Petersburg Polytechnic University, St. Petersburg, Russia.,National Research Centre Kurchatov Institute, Moscow, Russia
| | - A N Gorshkov
- Smorodintsev Research Institute of Influenza, Russian Ministry of Health, St. Petersburg, Russia
| | - E S Ramsay
- Smorodintsev Research Institute of Influenza, Russian Ministry of Health, St. Petersburg, Russia
| | - A Radulescu
- Jülich Centre, Neutron Science at Heinz Maier-Leibnitz Zentrum, Garching, Munich, Germany
| | - M V Sergeeva
- Smorodintsev Research Institute of Influenza, Russian Ministry of Health, St. Petersburg, Russia
| | - M A Plotnikova
- Smorodintsev Research Institute of Influenza, Russian Ministry of Health, St. Petersburg, Russia
| | - A B Komissarov
- Smorodintsev Research Institute of Influenza, Russian Ministry of Health, St. Petersburg, Russia
| | - A S Taraskin
- Smorodintsev Research Institute of Influenza, Russian Ministry of Health, St. Petersburg, Russia
| | - K I Lebedev
- Smorodintsev Research Institute of Influenza, Russian Ministry of Health, St. Petersburg, Russia.,Pavlov First Saint Petersburg State Medical University, St. Petersburg, Russia
| | - Yu P Garmay
- Petersburg Nuclear Physics Institute named by B. P, Konstantinov of National Research Center "Kurchatov Institute", Gatchina, Russia
| | - V V Kuznetsov
- Smorodintsev Research Institute of Influenza, Russian Ministry of Health, St. Petersburg, Russia
| | - V V Isaev-Ivanov
- Petersburg Nuclear Physics Institute named by B. P, Konstantinov of National Research Center "Kurchatov Institute", Gatchina, Russia
| | - A V Vasin
- Peter the Great St. Petersburg Polytechnic University, St. Petersburg, Russia.,Smorodintsev Research Institute of Influenza, Russian Ministry of Health, St. Petersburg, Russia.,St. Petersburg State Chemical-Pharmaceutical Academy, St. Petersburg, Russia
| | - L M Tsybalova
- Smorodintsev Research Institute of Influenza, Russian Ministry of Health, St. Petersburg, Russia
| | - V V Egorov
- Petersburg Nuclear Physics Institute named by B. P, Konstantinov of National Research Center "Kurchatov Institute", Gatchina, Russia.,National Research Centre Kurchatov Institute, Moscow, Russia.,Smorodintsev Research Institute of Influenza, Russian Ministry of Health, St. Petersburg, Russia.,Federal State Budgetary Scientific Institution "Institute of Experimental Medicine", St. Petersburg, Russia
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