Figure 8From: The Proteomic Code: a molecular recognition code for proteinsAmino acid co-locations. Randomly selected amino acid contacts from real proteins. The interactions between amino acid residues from 2 (A, B) 3 (C, D) and 4 (E, F) parallel alpha helices are perpendicular to the peptide backbones (helices). The orientations of residues show considerable variation; some are located side-by-side, others are end-to-end.Back to article page