Which structure consists mainly of polar and charged residues on its outward face and mostly non-polar,hydrophobic residues on its inner face?
A)β-sheet
B)triple helix
C)β-turn
D)amphiphilic helix

Question

Quizplus · Accepted Answer

An amphiphilic helix, also known as a transmembrane helix, consists mainly of polar and charged residues on its outward face, which face the aqueous environment, and mostly non-polar, hydrophobic residues on its inner face, which interact with the lipid bilayer. This arrangement is essential for the proper functioning of membrane proteins, which are responsible for many cellular processes. Beta sheets and beta turns do not exhibit such a distinct separation of polar and non-polar regions, while a triple helix is composed of repeating units of three collagen strands and does not contain a clear inner and outer face.

Which Structure Consists Mainly of Polar and Charged Residues on Its