Fig. 5From: The dipeptide conformations of all twenty amino acid types in the context of biosynthesisΦ,ψ energy surfaces for dipeptides. Φ,ψ energy surfaces for dipeptides with residue types are shown in this order: M (Met), N (Asn), P (Pro), Q (Gln), R (Arg). For P (Pro) the cyclic structure of sidechain locks the torsion angle. For details see the caption to Fig. 3 Back to article page