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. 2018 May 3;12(5):e0006349. doi: 10.1371/journal.pntd.0006349

Table 1. Summary of ebolavirus protein roles.

Protein Main Role Secondary Role
VP24 Inhibits IFN-α/β and IFN-γ signalling through interactions with importins, STAT signalling pathways, and NF-κB signalling pathways Nucleocapsid assembly and stability
RNA incorporation into VLPs
Regulates transcription and translation
VP30 Initiates ebolavirus transcription Counters RNA interference
VP35 Inhibits type-I IFN signalling by inhibiting activation of IRF-3 via dsRNA binding
Inhibits type-I IFN production by upregulating SUMOylation of IRF-7
Impairs dendritic cell maturation
Counters RNA interference
Inhibits antiviral effects by blocking protein kinase R
Assembly of viral complex with NP and VP30
Regulates RNA synthesis by modulating NP–RNA interactions and by interacting with dynein LC8
VP40 Viral assembly and budding Counters RNA interference
Induces apoptosis in bystander lymphocytes
GP Virus attachment and entry Late-stage cytotoxicity in cells
Decreases endothelial barrier function
Directly triggers T-lymphocyte death and augments monocyte maturation
NP Key component of ribonucleoprotein complex, encapsidates viral genome and protects viral mRNA from degradation
L Involved in transcription and regulation of viral genome and mRNA editing

Abbreviations: dsRNA, double-stranded RNA; GP, glycoprotein; IFN, interferon; IRF, interferon regulatory factor; L, L-polymerase; LC8, light chain 8; NF-κB, nuclear factor kappa B; NP, nucleoprotein; STAT, signal transducer and activator of transcription; SUMO, small ubiquitin-like modifier; VLPs, virus-like particles; VP, viral protein