Figure 2

Gliadin (33 aa) and the entire α-gliadin sequence (290 amino acids). Source: Uniprot; Q1WA39. Blue high-light: α2-gliadin, “the 33-mer”. Grey highlight: TG2 binding motives. Red: The amino acid flanking the glutamine residue to which TG2 binds during the first nucleophilic attack.