HelixConstraint D12 L13 0.73 HelixConstraint F37 A44 0.665 StrandConstraint T53 V54 0.841 StrandConstraint F64 N66 0.785 StrandConstraint N80 M82 0.672 HelixConstraint G91 I97 0.641 HelixConstraint V99 A104 0.603 HelixConstraint N121 G124 0.911