What shared property of a helices and ß sheets favors the formation of these structures in membrane spanning domains of a protein?A) Hydrogen bonding between backbone atoms reduces the polarity of the backbone.B) Only hydrophobic residues are found in these types of secondary structures.C) Alternating side-chains protrude from opposite sides of these structures allowing favorable interactions with the membrane.D) All of the above.E) None of the above.
