Journal of Molecular Biology, volume 433, issue 8, pages 166875

The Mechanism of SARS-CoV-2 Nucleocapsid Protein Recognition by the Human 14-3-3 Proteins

Hawkins Dorothy E D P 2
Smith Jake L R 2
Bayfield Oliver W 2
Ker De-Sheng 2
Klychnikov Oleg I. 3
Antson A.A. 2
Publication typeJournal Article
Publication date2021-04-01
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor5.6
ISSN00222836, 10898638
Molecular Biology
Structural Biology
Abstract
The coronavirus nucleocapsid protein (N) controls viral genome packaging and contains numerous phosphorylation sites located within unstructured regions. Binding of phosphorylated SARS-CoV N to the host 14-3-3 protein in the cytoplasm was reported to regulate nucleocytoplasmic N shuttling. All seven isoforms of the human 14-3-3 are abundantly present in tissues vulnerable to SARS-CoV-2, where N can constitute up to ~1% of expressed proteins during infection. Although the association between 14-3-3 and SARS-CoV-2 N proteins can represent one of the key host-pathogen interactions, its molecular mechanism and the specific critical phosphosites are unknown. Here, we show that phosphorylated SARS-CoV-2 N protein (pN) dimers, reconstituted via bacterial co-expression with protein kinase A, directly associate, in a phosphorylation-dependent manner, with the dimeric 14-3-3 protein, but not with its monomeric mutant. We demonstrate that pN is recognized by all seven human 14-3-3 isoforms with various efficiencies and deduce the apparent KD to selected isoforms, showing that these are in a low micromolar range. Serial truncations pinpointed a critical phosphorylation site to Ser197, which is conserved among related zoonotic coronaviruses and located within the functionally important, SR-rich region of N. The relatively tight 14-3-3/pN association could regulate nucleocytoplasmic shuttling and other functions of N via occlusion of the SR-rich region, and could also hijack cellular pathways by 14-3-3 sequestration. As such, the assembly may represent a valuable target for therapeutic intervention.

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Tugaeva K. V. et al. The Mechanism of SARS-CoV-2 Nucleocapsid Protein Recognition by the Human 14-3-3 Proteins // Journal of Molecular Biology. 2021. Vol. 433. No. 8. p. 166875.
GOST all authors (up to 50) Copy
Tugaeva K. V., Hawkins D. E. D. P., Smith J. L. R., Bayfield O. W., Ker D., Sysoev A. A., Klychnikov O. I., Antson A., Sluchanko N. N. The Mechanism of SARS-CoV-2 Nucleocapsid Protein Recognition by the Human 14-3-3 Proteins // Journal of Molecular Biology. 2021. Vol. 433. No. 8. p. 166875.
RIS |
Cite this
RIS Copy
TY - JOUR
DO - 10.1016/j.jmb.2021.166875
UR - https://doi.org/10.1016%2Fj.jmb.2021.166875
TI - The Mechanism of SARS-CoV-2 Nucleocapsid Protein Recognition by the Human 14-3-3 Proteins
T2 - Journal of Molecular Biology
AU - Tugaeva, Kristina V
AU - Hawkins, Dorothy E D P
AU - Smith, Jake L R
AU - Bayfield, Oliver W
AU - Ker, De-Sheng
AU - Sysoev, Andrey A.
AU - Klychnikov, Oleg I.
AU - Antson, A.A.
AU - Sluchanko, Nikolai N.
PY - 2021
DA - 2021/04/01 00:00:00
PB - Elsevier
SP - 166875
IS - 8
VL - 433
PMID - 33556408
SN - 0022-2836
SN - 1089-8638
ER -
BibTex |
Cite this
BibTex Copy
@article{2021_Tugaeva,
author = {Kristina V Tugaeva and Dorothy E D P Hawkins and Jake L R Smith and Oliver W Bayfield and De-Sheng Ker and Andrey A. Sysoev and Oleg I. Klychnikov and A.A. Antson and Nikolai N. Sluchanko},
title = {The Mechanism of SARS-CoV-2 Nucleocapsid Protein Recognition by the Human 14-3-3 Proteins},
journal = {Journal of Molecular Biology},
year = {2021},
volume = {433},
publisher = {Elsevier},
month = {apr},
url = {https://doi.org/10.1016%2Fj.jmb.2021.166875},
number = {8},
pages = {166875},
doi = {10.1016/j.jmb.2021.166875}
}
MLA
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MLA Copy
Tugaeva, Kristina V., et al. “The Mechanism of SARS-CoV-2 Nucleocapsid Protein Recognition by the Human 14-3-3 Proteins.” Journal of Molecular Biology, vol. 433, no. 8, Apr. 2021, p. 166875. https://doi.org/10.1016%2Fj.jmb.2021.166875.
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