Which is not true about β-sheets?
A)The side-chains of all amino acids point to the same side of the sheet.
B)The polypeptide chains in the sheet are nearly fully extended.
C)The range of allowed phi and psi angles is broader than for those in the α-helix.
D)In antiparallel sheets the hydrogen bonds between adjacent strands are nearly perpendicular to the backbones of the strands.

Question

Quizplus · Accepted Answer

The side chains of amino acids in β-sheets alternate in their orientation, with some pointing up and some pointing down from the plane of the sheet. This creates a distinctive pattern of side chain directionality that is characteristic of β-sheets.

Which Is Not True About β-Sheets