Figure 4. Amino acid preferences in occupied N-glycan sites.

The sequence logo displays residues preferentially placed at occupied N-glycan sequons. Neighboring residues located downstream (positions +3 to +5) and upstream (positions −1 and −2) from the asparagine residue (position 0) are also shown. The size of each letter represents the residue prevalence at the putative position. For example, threonine residue is preferred over serine, at position +2. The WebLogo server [29] was used to generate the sequence logo.