Fig. 3: Overview of the L protein structure.

a Schematic linear presentation of the L protein domain structure. b Complete ELONGATION structure of the L protein presented as a ribbon diagram in front view. Domains are coloured according to (a) and labelled. 3′ vRNA is coloured in orange, 5′ vRNA in pink and product RNA in black. See also Supplementary Movie 3 for a 3D impression of the L protein and its domains. c Separate presentation of the PA-like, PB1-like and PB2-like regions of the L protein in the ELONGATION structure.