Figure 1.

Phylogenetic tree highlighting the position of Staphylococcus aureus strain PR01 relative to other type strains within the Staphylococcaceae. The strains and their corresponding GenBank accession numbers for 16S rRNA genes are: S. aureus strain ATCC 12600, L36472; S. saprophyticus strain ATCC 15305, AP008934; S. epidermidis strain ATCC 14990, D83363; S. hominis strain DSM 20328, X66101; S. haemolyticus strain CCM2737, X66100; and S. cohnii strain ATCC 49330, AB009936. The tree uses sequences aligned by the RDP aligner, and uses the Jukes-Cantor corrected distance model to construct a distance matrix based on alignment model positions without the use of alignment inserts, and uses a minimum comparable position of 200. The tree is built with RDP Tree Builder, which uses Weighbor [1] with an alphabet size of 4 and length size of 1000. The building of the tree also involves a bootstrapping process repeated 100 times to generate a majority consensus tree [2]. Staphylococcus lutrae (X84731) was used as an outgroup.