Essential Biochemistry - Chemistry Of Proteins (Section 2 - No. 21)
Which of the following is a characteristic of a beta-sheet?
It is a helix
It is formed by hydrogen bonds between strands of the polypeptide
It is only found in tertiary structures
It contains disulfide bonds
Explanation
Beta-sheets are formed when polypeptide chains lie side-by-side, held together by hydrogen bonds between the carbonyl and amino groups of the peptide backbone.
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