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Phylogeny of the AnfG and VnfG sequences. AnfG and VnfG sequences from the environmental isolates and named bacterial species downloaded from the NCBI/GenBank database were added to the AnfG/VnfG protein family (PFAM 03139.13) alignment (PubMed ID 16381856), and nonconserved sequences at the N-termini were removed. Trees were generated by the neighbor-joining method using Phylip v3.6.
