Confidence level of the PROF prediction. Representation of the level of confidence of the PROF 2d-structure prediction for type I NLP consensus sequence (a), type II NLP consensus sequence (b) and 1lr5 cupin (c). The solid line (shaded gray) represents the confidence level for the β-strands, and the dashed line for the α-helices. SP = signal peptide. IMR = Inter Motif Region. η represents the GHRHDWE motif in type I and II NLP consensus sequences and ihrhscee in 1lr5, respectively.