Figure 1

Schematic structure of an α-type gliadin protein. The protein consists of a short N-terminal signal peptide (S) followed by a repetitive domain (R) and a longer non-repetitive domain (NR1 and NR2), separated by two polyglutamine repeats (Q1 and Q2). In the non-repetitive domains five conserved cystein residues are present which are indicated with vertical lines. The T cell epitopes are shown and their approximate position is indicated.