(2) p. 2 lines 2–3, “α-cyanobacteiral” has been changed to “α-cyanobacterial”.
Line 40: Line 120: From the tree as it is, one can see that NitM from β-cyanobacteria form a distinct clade. However, NitM from α‐cyanobacteria are not grouped in one clade. It is possible that another outgroup sequence or different methods for alignment and tree construction will help. Line 122: What methods were used for creating alignment and phylogenetic tree (for example, neighbor-joining)?