Functional domains of M148R and M149R Myxoma virus proteins. (A) Functional domains of M148R and M149R proteins found by 3 online software: Pfam [11], REP [1] and SMART [14]. “trunc” (truncated) indicates that only the second half of the repeat was identified. (B) Schematic representation of M148R and M149R proteins. Gray boxes: ANK repeat; hatched: PRANC (Pox protein Repeats of Ankyrin C-terminal) domain.