Supplementary Figure 2: Scatter plot of site-specific N-glycan processing of MERS-CoV S protein with a breakdown on the used proteases.

(a) Triple digestion, (b) the combination of trypsin and chymotrypsin, (c) chymotrypsin. The proportions of high mannose and complex type glycans at those glycosites highlighted in yellow were assigned based on the proportion of spectra hits since peak area did not reach the threshold. Mean ± SEM were plotted.