2022
Tick-borne encephalitis virus capsid protein induces translational shutoff as revealed by its structural-biological analysis
SELINGER, Martin, Radim NOVOTNY, Jakub SYS, Justin A ROBY, Hana TYKALOVA et. al.Základní údaje
Originální název
Tick-borne encephalitis virus capsid protein induces translational shutoff as revealed by its structural-biological analysis
Autoři
SELINGER, Martin, Radim NOVOTNY, Jakub SYS, Justin A ROBY, Hana TYKALOVA, Sri Ranjani GANJI (356 Indie, domácí), Marie VANCOVA, Katerina JAKLOVA, Filip KAUFMAN, Marshall E BLOOM, Zbyněk ZDRÁHAL (203 Česká republika, garant, domácí), Libor GRUBHOFFER, Jade K FORWOOD, Richard HRABAL, Michaela RUMLOVA a Jan STERBA
Vydání
JOURNAL OF BIOLOGICAL CHEMISTRY, ELSEVIER, 2022, 1083-351X
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10608 Biochemistry and molecular biology
Stát vydavatele
Nizozemské království
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 4.800
Kód RIV
RIV/00216224:14740/22:00128827
Organizační jednotka
Středoevropský technologický institut
UT WoS
000917299600007
Klíčová slova anglicky
Capsid; Capsid Proteins; Encephalitis Viruses; Tick-Borne; RNA; Viral Nonstructural Proteins
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 2. 11. 2024 21:12, Ing. Martina Blahová
Anotace
V originále
Tick-borne encephalitis virus (TBEV) is the most medically relevant tick-transmitted Flavivirus in Eurasia, targeting the host central nervous system and frequently causing severe encephalitis. The primary function of its capsid protein (TBEVC) is to recruit the viral RNA and form a nucleocapsid. Additional functionality of Flavivirus capsid proteins has been documented, but further investigation is needed for TBEVC. Here, we show the first capsid protein 3D structure of a member of the tick-borne flaviviruses group. The structure of monomeric Δ16-TBEVC was determined using high-resolution multidimensional NMR spectroscopy. Based on natural in vitro TBEVC homodimerization, the dimeric interfaces were identified by hydrogen deuterium exchange mass spectrometry (MS). Although the assembly of flaviviruses occurs in endoplasmic reticulum–derived vesicles, we observed that TBEVC protein also accumulated in the nuclei and nucleoli of infected cells. In addition, the predicted bipartite nuclear localization sequence in the TBEVC C-terminal part was confirmed experimentally, and we described the interface between TBEVC bipartite nuclear localization sequence and import adapter protein importin-alpha using X-ray crystallography. Furthermore, our coimmunoprecipitation coupled with MS identification revealed 214 interaction partners of TBEVC, including viral envelope and nonstructural NS5 proteins and a wide variety of host proteins involved mainly in rRNA processing and translation initiation. Metabolic labeling experiments further confirmed that TBEVC and other flaviviral capsid proteins are able to induce translational shutoff and decrease of 18S rRNA. These findings may substantially help to design a targeted therapy against TBEV.
Návaznosti
EF16_026/0008446, projekt VaV |
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LM2018140, projekt VaV |
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LX22NPO5103, projekt VaV |
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90127, velká výzkumná infrastruktura |
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