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. 2018 Apr 2;14(4):e1007331. doi: 10.1371/journal.pgen.1007331

Fig 5. Compensatory interaction between spatially proximal α-chain residues in bar-headed goose Hb.

Fig 5

The mutation Aα63V produces a >2-fold increase in autoxidation rate (kauto; ± 1 SEM) on genetic backgrounds with the ancestral Gly at residue position α18. This effect is fully compensated by Gα18S, as indicated by two double-mutant cycles (A and B) in which mutations at both sites are tested individually and in pairwise combination.