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. 2007 Dec 14;74(4):942–949. doi: 10.1128/AEM.01200-07

FIG. 1.

FIG. 1.

Phylogenetic (16S rRNA gene) tree showing the positions of Metallosphaera sp. strain MK1 described in the current study and three Metallosphaera-like clone groups obtained from 14 different acidic geothermal sites in YNP. A total of 421 Metallosphaera-like clones were in clone groups 1 to 3; however, the majority of these clones (415 clones) were in group 1 and were >98.9% similar to strain MK1. The values in parentheses are the levels of 16S rRNA gene sequence similarity to Metallosphaera sp. strain MK1. The tree is a PAUP neighbor-joining tree constructed with 1,000 bootstraps, using Aquifex pyrophilus as the outgroup.