Discovery of a small-molecule inhibitor targeting the ovarian tumor domain of a novel Tamdy orthonairoviruse associated with human febrile illness.
J Med Virol
; 94(12): 5954-5964, 2022 12.
Article
en En
| MEDLINE
| ID: mdl-36002383
ABSTRACT
Tick-borne orthonairoviruses have been characterized as a global health threat to humans and animals. Tacheng Tick virus 1 (TcTV-1) from this family was provided as evidence that is associated with the febrile illness syndrome. Here, we first identify and demonstrate that the ovarian tumor (OTU) domain of TcTV-1 has remarkable deubiquitinating activity both in vitro and in vivo. By solving the crystal structure of TcTV-1 OTU (tcOTU) domain and comparing it to that of human deubiquitinating enzymes, we found that overall structures of tcOTU and human OTU family are similar, but the residues involved in the catalytic pocket vary widely. Based on the tcOTU domain we screened 5090 bioactive compounds and found mecobalamin had a good effect on suppressing the deubiquitinating activity. The structural model of tcOTU and mecobalamin suggests that mecobalamin occupies the site of the substrate Ub, by blocking the substrate binding to the enzyme. Thus, our results showed OTU domain of TcTV-1 has a robust deubiquitinating activity and mecobalamin or its derivatives might be promising candidates for the treatment or prevention of disease caused by the TcTV-1 virus.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Contexto en salud:
2_ODS3
Problema de salud:
2_cobertura_universal
Asunto principal:
Neoplasias Ováricas
/
Ubiquitina
Tipo de estudio:
Prognostic_studies
/
Risk_factors_studies
Límite:
Animals
/
Female
/
Humans
Idioma:
En
Revista:
J Med Virol
Año:
2022
Tipo del documento:
Article
País de afiliación:
China