Which one of the following is INCORRECT about protein structures?

1.	Which one of the following is INCORRECT about protein structures?
A.	A protein fold is stabilized by favorable non-covalent interactions
B.	javascript:;All parts of a fold can be classified as helices, strands or turns
C.	Two non-covalent atoms cannot be closer than the sum of their van der Waals radii
D.	The peptide bond is nearly planar
Answer» C. Two non-covalent atoms cannot be closer than the sum of their van der Waals radii

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Which one of the following is INCORRECT about protein structures?

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