Molecular Organisation of Tick-Borne Encephalitis Virus. 2022

Lauri I A Pulkkinen, and Sarah V Barrass, and Aušra Domanska, and Anna K Överby, and Maria Anastasina, and Sarah J Butcher
Faculty of Biological and Environmental Sciences, Molecular and Integrative Bioscience Research Programme, University of Helsinki, 00014 Helsinki, Finland.

Tick-borne encephalitis virus (TBEV) is a pathogenic, enveloped, positive-stranded RNA virus in the family Flaviviridae. Structural studies of flavivirus virions have primarily focused on mosquito-borne species, with only one cryo-electron microscopy (cryo-EM) structure of a tick-borne species published. Here, we present a 3.3 Å cryo-EM structure of the TBEV virion of the Kuutsalo-14 isolate, confirming the overall organisation of the virus. We observe conformational switching of the peripheral and transmembrane helices of M protein, which can explain the quasi-equivalent packing of the viral proteins and highlights their importance in stabilising membrane protein arrangement in the virion. The residues responsible for M protein interactions are highly conserved in TBEV but not in the structurally studied Hypr strain, nor in mosquito-borne flaviviruses. These interactions may compensate for the lower number of hydrogen bonds between E proteins in TBEV compared to the mosquito-borne flaviviruses. The structure reveals two lipids bound in the E protein which are important for virus assembly. The lipid pockets are comparable to those recently described in mosquito-borne Zika, Spondweni, Dengue, and Usutu viruses. Our results thus advance the understanding of tick-borne flavivirus architecture and virion-stabilising interactions.

UI MeSH Term Description Entries
D009033 Culicidae A family of the order DIPTERA that comprises the mosquitoes. The larval stages are aquatic, and the adults can be recognized by the characteristic WINGS, ANIMAL venation, the scales along the wing veins, and the long proboscis. Many species are of particular medical importance. Mosquitoes,Mosquitos,Mosquito
D004669 Encephalitis Viruses, Tick-Borne A subgroup of the genus FLAVIVIRUS that causes encephalitis and hemorrhagic fevers and is found in eastern and western Europe and the former Soviet Union. It is transmitted by TICKS and there is an associated milk-borne transmission from viremic cattle, goats, and sheep. Hemorrhagic Fever Virus, Omsk,Kyasanur Forest disease virus,Langat virus,Louping ill virus,Omsk hemorrhagic fever virus,Powassan virus,Al-Khurma Hemorrhagic Fever Virus,Al-Khurma virus,Al-Khurma virus (ALKV),Alkhurma Hemorrhagic Fever Virus,Alkhurma virus,Alkhurma virus (ALKV),Encephalitis Virus, Tick-Borne,Tick-Borne Encephalitis Virus,Tick-Borne Encephalitis Viruses,Viruses, Tick-Borne Encephalitis,Al Khurma Hemorrhagic Fever Virus,Al Khurma virus,Al Khurma virus (ALKV),Encephalitis Virus, Tick Borne,Encephalitis Viruses, Tick Borne,Louping ill viruses,Tick Borne Encephalitis Virus,Tick Borne Encephalitis Viruses
D004675 Encephalitis, Tick-Borne Encephalitis caused by neurotropic viruses that are transmitted via the bite of TICKS. In Europe, the diseases are caused by ENCEPHALITIS VIRUSES, TICK-BORNE, which give rise to Russian spring-summer encephalitis, central European encephalitis, louping ill encephalitis, and related disorders. Powassan encephalitis occurs in North America and Russia and is caused by the Powassan virus. ASEPTIC MENINGITIS and rarely encephalitis may complicate COLORADO TICK FEVER which is endemic to mountainous regions of the western United States. (From Joynt, Clinical Neurology, 1996, Ch26, pp14-5) Far Eastern Russian Encephalitis,Powassan Encephalitis,Central European Encephalitis,Encephalitis, Central European,Encephalitis, European Tick-Borne,Encephalitis, Far Eastern Russian,Encephalitis, Louping Ill,Encephalitis, Russian Spring-Summer,European Tick-Borne Encephalitis,Louping Ill Encephalitis,Powassan Virus Disease,Russian Spring-Summer Encephalitis,Tick-Borne Encephalitis,Disease, Powassan Virus,Encephalitis, European Tick Borne,Encephalitis, Powassan,Encephalitis, Russian Spring Summer,Encephalitis, Tick Borne,European Tick Borne Encephalitis,Powassan Encephalitides,Powassan Virus Diseases,Russian Spring Summer Encephalitis,Spring-Summer Encephalitis, Russian,Tick Borne Encephalitis,Tick-Borne Encephalitis, European,Virus Disease, Powassan,Virus Diseases, Powassan
D000071243 Zika Virus Infection A viral disease transmitted by the bite of AEDES mosquitoes infected with ZIKA VIRUS. Its mild DENGUE-like symptoms include fever, rash, headaches and ARTHRALGIA. The viral infection during pregnancy, in rare cases, is associated with congenital brain and ocular abnormalities, called Congenital Zika Syndrome, including MICROCEPHALY and may also lead to GUILLAIN-BARRE SYNDROME. Congenital Zika Syndrome,Congenital Zika Virus Infection,Fever, Zika,ZikV Infection,Zika Fever,Zika Virus Disease,Disease, Zika Virus,Infection, ZikV,Infection, Zika Virus,Virus Disease, Zika,Virus Infection, Zika
D000071244 Zika Virus An arbovirus in the FLAVIVIRUS genus of the family FLAVIVIRIDAE. Originally isolated in the Zika Forest of UGANDA it has been introduced to Asia and the Americas. Virus, Zika,ZikV
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D014764 Viral Proteins Proteins found in any species of virus. Gene Products, Viral,Viral Gene Products,Viral Gene Proteins,Viral Protein,Protein, Viral,Proteins, Viral
D014771 Virion The infective system of a virus, composed of the viral genome, a protein core, and a protein coat called a capsid, which may be naked or enclosed in a lipoprotein envelope called the peplos. Virus Particle,Viral Particle,Viral Particles,Particle, Viral,Particle, Virus,Particles, Viral,Particles, Virus,Virions,Virus Particles
D020285 Cryoelectron Microscopy Electron microscopy involving rapid freezing of the samples. The imaging of frozen-hydrated molecules and organelles permits the best possible resolution closest to the living state, free of chemical fixatives or stains. Electron Cryomicroscopy,Cryo-electron Microscopy,Cryo electron Microscopy,Cryo-electron Microscopies,Cryoelectron Microscopies,Cryomicroscopies, Electron,Cryomicroscopy, Electron,Electron Cryomicroscopies,Microscopies, Cryo-electron,Microscopies, Cryoelectron,Microscopy, Cryo-electron,Microscopy, Cryoelectron

Related Publications

Lauri I A Pulkkinen, and Sarah V Barrass, and Aušra Domanska, and Anna K Överby, and Maria Anastasina, and Sarah J Butcher
January 2007, Voprosy virusologii,
Lauri I A Pulkkinen, and Sarah V Barrass, and Aušra Domanska, and Anna K Överby, and Maria Anastasina, and Sarah J Butcher
May 2022, Journal of medical microbiology,
Lauri I A Pulkkinen, and Sarah V Barrass, and Aušra Domanska, and Anna K Överby, and Maria Anastasina, and Sarah J Butcher
May 2011, Emerging infectious diseases,
Lauri I A Pulkkinen, and Sarah V Barrass, and Aušra Domanska, and Anna K Överby, and Maria Anastasina, and Sarah J Butcher
January 2007, Voprosy virusologii,
Lauri I A Pulkkinen, and Sarah V Barrass, and Aušra Domanska, and Anna K Överby, and Maria Anastasina, and Sarah J Butcher
September 2013, The Journal of general virology,
Lauri I A Pulkkinen, and Sarah V Barrass, and Aušra Domanska, and Anna K Överby, and Maria Anastasina, and Sarah J Butcher
October 1993, APMIS : acta pathologica, microbiologica, et immunologica Scandinavica,
Lauri I A Pulkkinen, and Sarah V Barrass, and Aušra Domanska, and Anna K Överby, and Maria Anastasina, and Sarah J Butcher
April 1997, Acta virologica,
Lauri I A Pulkkinen, and Sarah V Barrass, and Aušra Domanska, and Anna K Överby, and Maria Anastasina, and Sarah J Butcher
January 1967, Acta virologica,
Lauri I A Pulkkinen, and Sarah V Barrass, and Aušra Domanska, and Anna K Överby, and Maria Anastasina, and Sarah J Butcher
December 2001, European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology,
Lauri I A Pulkkinen, and Sarah V Barrass, and Aušra Domanska, and Anna K Överby, and Maria Anastasina, and Sarah J Butcher
January 2020, Emerging infectious diseases,
Copied contents to your clipboard!