The most common motif found in membrane spanning proteins is
A) $\alpha$ helices of nonpolar amino acids that pass through the membrane.
B) $\alpha$helices of charged amino acids that form channels via extensive hydrogen bonding.
C) a triple helix of $\alpha$ helices.
D) a helix-turn-helix arrangement of the peptide strands.
E) None of the answers is correct.

Question

Quizplus · Accepted Answer

The most common motif found in membrane-spanning proteins is alpha-helices of nonpolar amino acids that pass through the membrane. This structure allows the hydrophobic side chains to interact with the lipid bilayer, anchoring the protein within the membrane.

The Most Common Motif Found in Membrane Spanning Proteins Is α\alphaα

The Most Common Motif Found in Membrane Spanning Proteins Is $\alpha$