Interactions among Dendrolimus punctatus cypovirus proteins and identification of the genomic segment encoding its A-spike.
Revealing the interactions among cypovirus proteins would facilitate our understanding of the replication and assembly of this virus. In the present study, interactions among proteins encoded by the 10 segments of Dendrolimus punctatus cypovirus (DpCPV) were identified using yeast two-hybrid (Y2H) and far-Western blotting assays. In total, 24 pairs of interactions were detected. Twelve pairs of one-direction interactions, four pairs of binary interactions and four pairs of self-associations were identified in the Y2H assays. Another four pairs of interactions were identified by far-Western blotting. The interactions between the methyltransferase domain of the turret protein (VP3) and VP4 as well as between polyhedrin and VP4 were further confirmed by far-Western blotting and pull-down assays, respectively. In addition, immunogold labelling showed that the A-spike of DpCPV is formed by VP4. In conclusion, we obtained a protein-protein interaction network of DpCPV and showed that its A-spike is formed by VP4 encoded by genomic segment 6.
Key Laboratory of Agricultural and Environmental Microbiology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, PR China.
Chuangang
C
Cheng
Key Laboratory of Agricultural and Environmental Microbiology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, PR China.
Yunpeng
Y
Shao
Key Laboratory of Agricultural and Environmental Microbiology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, PR China.
Lan
L
Su
Key Laboratory of Agricultural and Environmental Microbiology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, PR China.
Yin
Y
Zhou
Key Laboratory of Agricultural and Environmental Microbiology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, PR China.
Xiulian
X
Sun
D000818:Animals; D026481:Blotting, Far-Western; D007915:Lepidoptera / Q000821:virology; D011485:Protein Binding; D025941:Protein Interaction Mapping; D060066:Protein Interaction Maps; D012087:Reoviridae / Q000502:physiology*; D020798:Two-Hybrid System Techniques; D014764:Viral Proteins / Q000378:metabolism*; D019065:Virus Assembly; D014779:Virus Replication
D014764:Viral Proteins