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Protein Structure and Functions - 2
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In the beta pleated-sheet, the R-groups of the amino acids
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A
are found above and below the plane of the sheet
💡 Explanation:
In beta pleated sheets, the polypeptide backbone lies in the plane of the sheet, with the peptide groups forming hydrogen bonds between adjacent strands. The R-groups (side chains) alternate above and below this plane, minimizing steric hindrance between adjacent side chains.