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Co-immunoprecipitation of the Mouse Mx1 Protein with the Influenza A Virus Nucleoprotein
Published on: April 21, 2015
Identification of host cell proteins that interact with the M protein of Pigeon paramyxovirus type 1
Xiaoli Tao1, Baili Zheng2, Xiaogang Liu2
1Department of Pathogenic Microbiology, Jinzhou Medical University, Jinzhou, China.
Abstract:
Pigeon paramyxovirus type 1 (PPMV-1) belongs to the avian paramyxovirus type 1 group of viruses, which can cause tremors, torticollis, and respiratory signs in domestic and wild pigeons. The M protein of PPMV-1 is a multifunctional structural protein. It not only helps in the assembly, budding, and positioning of the virus but also inhibits the host's immune response and promotes replication of the virus in the host. In this study, the GST pull-down method was used to screen host proteins that interact with PPMV-1 M protein, and then mass spectrometry (MS) was used to analyse the screened host proteins. Enrichment analysis of the differentially expressed genes showed that the 77 screened proteins were highly associated with the gene ontology categories: protein synthesis, metabolism, and cell signalling pathway transduction. We selected NIMA-related kinase 7 (NEK7) as the candidate protein for co-localization analysis and co-immunoprecipitation verification. The results revealed that PPMV-1 M protein interacts with NEK7 of the host cell. This interactome study of PPMV-1 M protein will serve to clarify its function during viral replication and will provide a crucial theoretical basis for studying the pathogenic mechanism of PPMV-1.
Insights
Pigeon paramyxovirus type 1 (PPMV-1) M protein interacts with host cell protein NEK7. This discovery clarifies PPMV-1
Area of Science:
- Virology
- Molecular Biology
- Immunology
Background:
- Pigeon paramyxovirus type 1 (PPMV-1) causes significant disease in pigeons.
- The PPMV-1 M protein plays a key role in viral assembly, budding, immune evasion, and replication.
- Understanding M protein interactions is crucial for elucidating PPMV-1 pathogenesis.
Purpose of the Study:
- To identify host proteins interacting with the PPMV-1 M protein.
- To investigate the functional significance of these interactions in viral replication.
- To provide a theoretical basis for understanding PPMV-1 pathogenicity.
Main Methods:
- GST pull-down assay to screen for interacting host proteins.
- Mass spectrometry (MS) for analysis of screened proteins.
- Co-localization and co-immunoprecipitation assays to verify protein interactions.
Main Results:
- Identified 77 host proteins interacting with PPMV-1 M protein.
- Enrichment analysis revealed associations with protein synthesis, metabolism, and cell signaling pathways.
- Confirmed interaction between PPMV-1 M protein and NIMA-related kinase 7 (NEK7).
Conclusions:
- PPMV-1 M protein interacts with the host factor NEK7.
- This interaction likely influences viral replication and pathogenesis.
- Further studies on this interactome will advance understanding of PPMV-1 disease mechanisms.
