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. 2018 Jul 17;9:1576. doi: 10.3389/fmicb.2018.01576

FIGURE 6.

FIGURE 6

Phylogenetic tree of representative deduced bmoX sequences generated from different clone libraries of gas field soil samples (G) and reference sequences from GenBank. The tree was created using the neighbor-joining method with 1000 bootstrap replications; bootstrap values over 50% are shown at the branch nodes; the scale bars represents 10% sequence divergence. The GenBank accession number of all sequences used to build the tree is given in parentheses. The number of clones for each OPF is given in brackets [G-0/G-6/G-9/G-12/G-14]. Abbreviations for SDIMOs were as follows: Mmo, methane monooxygenase; PrmA, propane monooxygenase hydroxylase large subunit; pBmoX, putative butane monooxygenase alpha subunit; Mo, monooxygenase; pMo, putative monooxygenase. Sequences in clusters with pink background belong to group 3 SDIMOs; sequences in clusters with green background belong to group 5 SDIMOs; clusters with yellow background include both sequences belonging to group 3 and group 5 SDIMOs; clusters with gray background are unclassified SDIMOs and monooxygenases.