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. 2008 Dec 19;3(12):e3976. doi: 10.1371/journal.pone.0003976

Figure 1. Maximum-likelihood tree of the NHase α subunit sequences.

Figure 1

(AMD – acid mine drainage, MFS – Minnesota farm soil, GOS - Global Ocean Sampling Expedition, NPSG - North Pacific Subtropical Gyre, WLF – whale falls). The Monosiga sequence clusters together with sequences from GOS, MFS, NPSG and Actinobacteria and Proteobacteria from UniRef. A large fraction of GOS sequences form a separated branch (weak bootstrap support) with different subgroups. All these sequences seem to originated from Proteobacteria as our BLAST-based analysis indicate (Methods S1). The β subunit shows a similar trend .