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. 2013 Oct 7;8(10):e76764. doi: 10.1371/journal.pone.0076764

Figure 5. HA homology models of the 2003 H7N7 and 2013 H7N9 human strains are structurally similar.

Figure 5

(A) Ribbon structure and model quality estimation of a representative 2003 H7N7 human HA homology model. QMEAN score is indicated below. QMEAN scores > 0.5 are considered reliable. α-helix (red), ß-sheet (yellow), and structural loops (white) are indicated. HA homology model superimposition of the representative (B) 2003 H7N7 human and 2011 H7N9 avian strains, and (C) 2003 H7N7 and 2013 H7N9 human strains. HA homology models of the 2003 H7N7 (violet), 2011 H7N9 (blue), and 2013 (pink) strains are shown. Non-overlapping regions representing structural differences (shaded in gray) are indicated. RMSD scores of the superimposed Cα backbone are indicated below. RMSD scores close to 0 would insinuate low structural difference between the homology models.