FIG. 4.

Neighbor-joining analysis (1,000 bootstrap replicates) of partial inferred amino acid sequences for authentic and putative coxL and inferred amino acid sequences of selected molybdenum hydroxylases (indicated in italic characters in the figure): Aeropyrum pernix nicotine dehydrogenase, chain C, accession number NP148464; Arthrobacter nicotinovorans nicotine dehydrogenase, large subunit, AAK6423; Deinococcus radiodurans oxidoreductase, 285554; M. loti aldehyde oxidoreductase, NP105651; and Pseudomonas putida quinoline 2-oxidoreductase, CAA66830. Sequences derived from genome databases are indicated with asterisks. Bootstrap values < 70% are not shown. A P. aerophilum putative coxL sequence was used as an outgroup.