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The phylogenetic tree of archaeal amoA genes from the six metagenomes of the Yap Trench. The sequences retrieved from this study are highlighted in bold font. Only those with >60 bootstrap values are shown as filled circles at each branch. The amoA gene of Candidatus Nitrosocaldus yellowstonensis (ABY83788) is used as the outgroup. The scale bar indicates 0.05 amino acid substitutions per site.
