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. 2020 Oct 21;166(10):894–908. doi: 10.1099/mic.0.000977

Fig. 4.

Fig. 4.

Relationship of the α-subunits of the sMMOs and sMMO-like proteins from facultative methanotrophs (indicated with red diamonds) and other representative strains. The sequences at the bottom of the figure, which form a group with BmoX (butane monooxygenase) of Thauera butanivorans, are from non-methanotrophs, except for those from Methylocella tundrae strains PC1 and PC4. The tree was drawn using the maximum-likelihood method in mega7 [183], with bootstrap values (500 replications) greater than 75 % shown as solid circles at the nodes. The tree is drawn to scale and the scale bar indicates substitutions per site. There were a total of 540 amino acid residues in the final dataset.