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@ARTICLE{Shvetsov:878184,
author = {Shvetsov, A. V. and Lebedev, D. V. and Zabrodskaya, Y. A.
and Shaldzhyan, A. A. and Egorova, M. A. and Vinogradova, D.
S. and Konevega, A. L. and Gorshkov, A. N. and Ramsay, E. S.
and Radulescu, Aurel and Sergeeva, M. V. and Plotnikova, M.
A. and Komissarov, A. B. and Taraskin, A. S. and Lebedev, K.
I. and Garmay, Yu. P. and Kuznetsov, V. V. and Isaev-Ivanov,
V. V. and Vasin, A. V. and Tsybalova, L. M. and Egorov, V.
V.},
title = {{C}old and distant: structural features of the
nucleoprotein complex of a cold-adapted influenza {A} virus
strain},
journal = {Journal of biomolecular structure $\&$ dynamics},
volume = {39},
number = {12},
issn = {0739-1102},
address = {Abingdon [u.a.]},
publisher = {Taylor $\&$ Francis},
reportid = {FZJ-2020-02672},
pages = {4375-4384},
year = {2021},
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.},
cin = {JCNS-FRM-II / MLZ / JCNS-4},
ddc = {570},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 / I:(DE-588b)4597118-3 /
I:(DE-Juel1)JCNS-4-20201012},
pnm = {632 - Materials – Quantum, Complex and Functional
Materials (POF4-632) / 6G4 - Jülich Centre for Neutron
Research (JCNS) (FZJ) (POF4-6G4)},
pid = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G4},
experiment = {EXP:(DE-MLZ)KWS1-20140101 / EXP:(DE-MLZ)KWS2-20140101},
typ = {PUB:(DE-HGF)16},
pubmed = {32490728},
UT = {WOS:000544776000001},
doi = {10.1080/07391102.2020.1776636},
url = {https://juser.fz-juelich.de/record/878184},
}