Domain boundary predictions for 1QQG. (a) True domains and domain boundaries (boundaries indicated by '!') and the predicted domain boundaries (indicated by 'x') for chain A of protein 1QQG, a two domain protein with a domain linker delineated by "!". Both domain boundaries are accurately predicted. These predictions were made using a decision threshold of 0.5 (b) Structural plot for chain A of protein 1QQG. The predicted domain boundaries are shaded orange. The linker between the two domains could not be structurally determined (i.e., its coordinates were not available) and is therefore represented by the dashed line.