Figure 1.

Phylogenetic position of Thermovibrio ammonificans HB-1^T relative to other type strains within the Aquificae. Sequences were aligned automatically using CLUSTAL X and the alignment was manually refined using SEAVIEW [4,5]. The neighbor-joining tree was constructed with Phylo_Win, using the Jukes-Cantor correction [4]. Bootstrap values based on 100 replications. Bar, 0.02 substitutions per nucleotide position.