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

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.
Mesh Terms:
Gene Library, Host-Pathogen Interactions, Humans, Intracellular Signaling Peptides and Proteins, Protein Binding, Protein Interaction Mapping, Proteolysis, SARS Virus, Two-Hybrid System Techniques, Ubiquitin, Viral Proteins
Virol Sin
Date: Apr. 01, 2015
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