Below shows 3D Images of many proteins (copied from ) along-side their corresponding Distance and Contact Maps (made at using each protein's *.pdb file). Most proteins were chosen to represent different classes within the SCOPe database (). SCOPe classes a to j are natural proteins and peptides. Ones in class k are designed proteins. Each 3D Image below uses a color scheme in which low-numbered residues are blue while high-numbered residues are red. Some images come from NMR ensembles and so show multiple strands of the same protein with the same coloring but slightly different conformations.