Fig. 6: Scatter plot of the HA proteolytic cleavage site.
From: A risk marker of tribasic hemagglutinin cleavage site in influenza A (H9N2) virus
a Scatter plots of each AA residue at the HACS of 1550 HA sequences. The X-axis is HPI (unitless), and the Y-axis is Y-axis is VdWV (Å3). b Scatter plots for P2 position residues. Potential mutation pathways are shown by an arrow. An “Avoided Region” was marked to show the biochemical properties that appear to be unfavorable for the P2 position mutation.
