Cover design The effects of inter-contact residues on restriction of interior side chain conformations are shown for 
-helical (top left), 
-sheet (bottom) and coil (top right) conformations. The colours represent the 
S for contact between any two of the eight residue pairs shown, where black represents a S of -1.5 j/mol/oK, and white +1 j/mol/oK, with intermediate colours brown through red, green through yellow and dark blue through pale blue, moving in the direction minus to plus. For further details, see Isogai
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