Virologica Sinica

, Volume 30, Issue 2, pp 153–161 | Cite as

Severe acute respiratory syndrome coronavirus protein 6 mediates ubiquitin-dependent proteosomal degradation of N-Myc (and STAT) interactor

  • Weijia Cheng
  • Shiyou Chen
  • Ruiling Li
  • Yu Chen
  • Min WangEmail author
  • Deyin Guo
Research Article


Severe acute respiratory syndrome coronavirus (SARS-CoV) encodes eight accessory proteins, the functions of which are not yet fully understood. SARS-CoV protein 6 (P6) is one of the previously studied accessory proteins that have been documented to enhance viral replication and suppress host interferon (IFN) signaling pathways. Through yeast two-hybrid screening, we identified eight potential cellular P6-interacting proteins from a human spleen cDNA library. For further investigation, we targeted the IFN signaling pathway-mediating protein, N-Myc (and STAT) interactor (Nmi). Its interaction with P6 was confirmed within cells. The results showed that P6 can promote the ubiquitin-dependent proteosomal degradation of Nmi. This study revealed a new mechanism of SARS-CoV P6 in limiting the IFN signaling to promote SARS-CoV survival in host cells.


severe acute respiratory syndrome coronavirus (SARS-CoV) P6 N-Myc (and STAT) interactor (Nmi) interferon (IFN) signaling pathway ubiquitination proteosomal degradation 


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Copyright information

© Wuhan Institute of Virology, CAS and Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • Weijia Cheng
    • 1
  • Shiyou Chen
    • 2
  • Ruiling Li
    • 2
  • Yu Chen
    • 2
  • Min Wang
    • 1
    Email author
  • Deyin Guo
    • 1
    • 2
  1. 1.School of Basic Medical SciencesWuhan UniversityWuhanChina
  2. 2.College of Life SciencesWuhan UniversityWuhanChina

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