Fig. 3.

Phylogenetic tree for Uxmal virus and selected related reference and non-reference sequences. The amino acid sequences of the ORF encoding the RdRp were aligned using muscle [60]. A maximum-likelihood phylogenetic tree was estimated using the Bayesian Markov chain Monte Carlo method implemented in MrBayes version 3.2.6 [61], sampling across the default set of fixed amino acid rate matrices with one million generations and discarding the first 25 % as burn-in. The figure was produced using FigTree (http://tree.bio.ed.ac.uk/software/figtree/). The tree is midpoint-rooted and selected nodes are labelled with posterior probability values. GenBank accession numbers are indicated next to virus names.