FIG. 6.

Neighbor-joining tree showing phylogenetic relationships among carotenoid glycosyltransferases. Amino acid sequences were aligned and used to reconstruct the phylogeny; all labels are the automatically assigned locus tags for that ORF. Only C. tepidum CruC and S. aureus SA2350 have been genetically characterized. Another class II glycosyltransferase, CT0362, from C. tepidum was used as the outgroup for this comparison. Numbers for open reading frames in C. aggregans, H. aurantiacus, R. castenholzii, and Roseiflexus sp. strain (R. strain) RS-1 are the numbers currently assigned in the draft genome sequences.