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Bat severe acute respiratory syndrome-like coronavirus ORF3b homologues display different interferon antagonist activities

Identifieur interne : 000913 ( PascalFrancis/Curation ); précédent : 000912; suivant : 000914

Bat severe acute respiratory syndrome-like coronavirus ORF3b homologues display different interferon antagonist activities

Auteurs : PENG ZHOU [République populaire de Chine] ; HONGXIA LI [République populaire de Chine] ; HANZHONG WANG [République populaire de Chine] ; Wang Lin-Fa [Australie] ; ZHENGLI SHI [République populaire de Chine]

Source :

RBID : Pascal:12-0103990

Descripteurs français

English descriptors

Abstract

The ORF3b protein of severe acute respiratory syndrome coronavirus (SARS-CoV) has a nuclear localization signal (NLS) at its C terminus and antagonizes interferon (IFN) function by modulating the activity of IFN regulatory factor 3 (IRF3). SARS-like coronaviruses (SL-CoVs) found in bats share an identical genome organization and high sequence identity for most of their gene products. In this study, ORF3b homologues were identified from three bat SL-CoV strains. These ORF3b homologues were C-terminally truncated and lacked the C-terminal NLS of SARS-CoV. IFN antagonist activities analysis demonstrated that one SL-CoV ORF3b still possessed IFN antagonist and IRF3-modulating activities. These results indicate that different ORF3b proteins display different IFN antagonist activities and this function is independent of the protein's nuclear localization, suggesting a potential link between bat SL-CoV ORF3b function and viral pathogenesis.
pA  
A01 01  1    @0 0022-1317
A02 01      @0 JGVIAY
A03   1    @0 J. gen. virol.
A05       @2 93
A06       @3 p. 2
A08 01  1  ENG  @1 Bat severe acute respiratory syndrome-like coronavirus ORF3b homologues display different interferon antagonist activities
A11 01  1    @1 PENG ZHOU
A11 02  1    @1 HONGXIA LI
A11 03  1    @1 HANZHONG WANG
A11 04  1    @1 LIN-FA (Wang)
A11 05  1    @1 ZHENGLI SHI
A14 01      @1 State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences @2 Wuhan @3 CHN @Z 1 aut. @Z 2 aut. @Z 3 aut. @Z 5 aut.
A14 02      @1 Australian Animal Health Laboratory, Commonwealth Scientific and Industrial Research Organisation Livestock Industries @2 Geelong, Victoria @3 AUS @Z 4 aut.
A20       @1 275-281
A21       @1 2012
A23 01      @0 ENG
A43 01      @1 INIST @2 13533 @5 354000502813940060
A44       @0 0000 @1 © 2012 INIST-CNRS. All rights reserved.
A45       @0 3/4 p.
A47 01  1    @0 12-0103990
A60       @1 P
A61       @0 A
A64 01  1    @0 Journal of general virology
A66 01      @0 GBR
C01 01    ENG  @0 The ORF3b protein of severe acute respiratory syndrome coronavirus (SARS-CoV) has a nuclear localization signal (NLS) at its C terminus and antagonizes interferon (IFN) function by modulating the activity of IFN regulatory factor 3 (IRF3). SARS-like coronaviruses (SL-CoVs) found in bats share an identical genome organization and high sequence identity for most of their gene products. In this study, ORF3b homologues were identified from three bat SL-CoV strains. These ORF3b homologues were C-terminally truncated and lacked the C-terminal NLS of SARS-CoV. IFN antagonist activities analysis demonstrated that one SL-CoV ORF3b still possessed IFN antagonist and IRF3-modulating activities. These results indicate that different ORF3b proteins display different IFN antagonist activities and this function is independent of the protein's nuclear localization, suggesting a potential link between bat SL-CoV ORF3b function and viral pathogenesis.
C02 01  X    @0 002A05C10
C03 01  X  FRE  @0 Coronavirus @2 NW @5 01
C03 01  X  ENG  @0 Coronavirus @2 NW @5 01
C03 01  X  SPA  @0 Coronavirus @2 NW @5 01
C03 02  X  FRE  @0 Interféron @2 NK @2 FR @5 05
C03 02  X  ENG  @0 Interferon @2 NK @2 FR @5 05
C03 02  X  SPA  @0 Interferón @2 NK @2 FR @5 05
C03 03  X  FRE  @0 Syndrome respiratoire aigu sévère @2 NM @5 14
C03 03  X  ENG  @0 Severe acute respiratory syndrome @2 NM @5 14
C03 03  X  SPA  @0 Síndrome respiratorio agudo severo @2 NM @5 14
C07 01  X  FRE  @0 Coronaviridae @2 NW
C07 01  X  ENG  @0 Coronaviridae @2 NW
C07 01  X  SPA  @0 Coronaviridae @2 NW
C07 02  X  FRE  @0 Nidovirales @2 NW
C07 02  X  ENG  @0 Nidovirales @2 NW
C07 02  X  SPA  @0 Nidovirales @2 NW
C07 03  X  FRE  @0 Virus @2 NW
C07 03  X  ENG  @0 Virus @2 NW
C07 03  X  SPA  @0 Virus @2 NW
C07 04  X  FRE  @0 Pathologie de l'appareil respiratoire @5 13
C07 04  X  ENG  @0 Respiratory disease @5 13
C07 04  X  SPA  @0 Aparato respiratorio patología @5 13
C07 05  X  FRE  @0 Virose
C07 05  X  ENG  @0 Viral disease
C07 05  X  SPA  @0 Virosis
C07 06  X  FRE  @0 Infection
C07 06  X  ENG  @0 Infection
C07 06  X  SPA  @0 Infección
C07 07  X  FRE  @0 Pathologie des poumons @5 16
C07 07  X  ENG  @0 Lung disease @5 16
C07 07  X  SPA  @0 Pulmón patología @5 16
N21       @1 079
N44 01      @1 OTO
N82       @1 OTO

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Pascal:12-0103990

Le document en format XML

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<div type="abstract" xml:lang="en">The ORF3b protein of severe acute respiratory syndrome coronavirus (SARS-CoV) has a nuclear localization signal (NLS) at its C terminus and antagonizes interferon (IFN) function by modulating the activity of IFN regulatory factor 3 (IRF3). SARS-like coronaviruses (SL-CoVs) found in bats share an identical genome organization and high sequence identity for most of their gene products. In this study, ORF3b homologues were identified from three bat SL-CoV strains. These ORF3b homologues were C-terminally truncated and lacked the C-terminal NLS of SARS-CoV. IFN antagonist activities analysis demonstrated that one SL-CoV ORF3b still possessed IFN antagonist and IRF3-modulating activities. These results indicate that different ORF3b proteins display different IFN antagonist activities and this function is independent of the protein's nuclear localization, suggesting a potential link between bat SL-CoV ORF3b function and viral pathogenesis.</div>
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