HelixConstraint S36 M43 0.789 HelixConstraint G45 M47 0.725 StrandConstraint H57 F60 0.718 StrandConstraint V71 K72 0.803 HelixConstraint P87 F93 0.775 HelixConstraint A95 M97 0.772 HelixConstraint D106 K108 0.685