TY - JOUR

T1 - Tertiary Structures of Haseki Tick Virus Nonstructural Proteins Are Similar to Those of Orthoflaviviruses

AU - Gladysheva, Anastasia

AU - Osinkina, Irina

AU - Radchenko, Nikita

AU - Alkhireenko, Daria

AU - Agafonov, Alexander

N1 - Сведения о финансировании Ministry of Education and Science of the Russian Federation 075-15-2021-1355

PY - 2024/12/20

Y1 - 2024/12/20

N2 - Currently, a large number of novel tick-borne viruses potentially pathogenic to humans are discovered. Studying many of them by classical methods of virology is difficult due to the absence of live viral particles or a sufficient amount of their genetic material. In this case, the use of modern methods of bioinformatics and synthetic and structural biology can help. Haseki tick virus (HSTV) is a recently discovered tick-borne unclassified ssRNA(+) virus. HSTV-positive patients experienced fever and an elevated temperature. However, at the moment, there is no information on the tertiary structure and functions of its proteins. In this work, we used AlphaFold 3 and other bioinformatic tools for the annotation of HSTV nonstructural proteins, based on the principle that the tertiary structure of a protein is inextricably linked with its molecular function. We were the first to obtain models of tertiary structures and describe the putative functions of HSTV nonstructural proteins (NS3 helicase, NS3 protease, NS5 RNA-dependent RNA-polymerase, and NS5 methyltransferase), which play a key role in viral genome replication. Our results may help in further taxonomic identification of HSTV and the development of direct-acting antiviral drugs, POC tests, and vaccines.

AB - Currently, a large number of novel tick-borne viruses potentially pathogenic to humans are discovered. Studying many of them by classical methods of virology is difficult due to the absence of live viral particles or a sufficient amount of their genetic material. In this case, the use of modern methods of bioinformatics and synthetic and structural biology can help. Haseki tick virus (HSTV) is a recently discovered tick-borne unclassified ssRNA(+) virus. HSTV-positive patients experienced fever and an elevated temperature. However, at the moment, there is no information on the tertiary structure and functions of its proteins. In this work, we used AlphaFold 3 and other bioinformatic tools for the annotation of HSTV nonstructural proteins, based on the principle that the tertiary structure of a protein is inextricably linked with its molecular function. We were the first to obtain models of tertiary structures and describe the putative functions of HSTV nonstructural proteins (NS3 helicase, NS3 protease, NS5 RNA-dependent RNA-polymerase, and NS5 methyltransferase), which play a key role in viral genome replication. Our results may help in further taxonomic identification of HSTV and the development of direct-acting antiviral drugs, POC tests, and vaccines.

KW - AlphaFold 3

KW - Flaviviridae

KW - RNA viruses

KW - ixodid ticks

KW - orthoflavi-like viruses

KW - protein structure

KW - tick-borne infection

KW - viral proteins

UR - https://www.mendeley.com/catalogue/fcdce55b-3c5b-3bd6-b98a-dcd97f4575f4/

UR - https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85213215943&origin=inward

U2 - 10.3390/ijms252413654

DO - 10.3390/ijms252413654

M3 - Article

C2 - 39769413

VL - 25

JO - International Journal of Molecular Sciences

JF - International Journal of Molecular Sciences

SN - 1661-6596

IS - 24

M1 - 13654

ER -