RNA Editing as a General Trait of Ebolaviruses.

RNA editing has been discovered as an essential mechanism for the transcription of the glycoprotein (GP) gene of Ebola virus (EBOV) but not Marburg virus. We developed a rapid transcript quantification assay (RTQA) to analyze RNA transcripts generated through RNA editing and used immunoblotting with a pan-ebolavirus monoclonal antibody to confirm different GP gene derived products. RTQA successfully quantified GP gene transcripts during infection with representative members of five ebolavirus species. Immunoblotting verified expression of the soluble (sGP) and the transmembrane GP. Our results defined RNA editing as a general trait of ebolaviruses. The degree of editing, however, varies among ebolaviruses with Reston virus showing the lowest and Bundibugyo virus the highest degree of editing.