HelixConstraint G27 L31 0.637 StrandConstraint T38 V41 0.602 HelixConstraint L74 A83 0.655 StrandConstraint L92 V93 0.613 HelixConstraint S100 Y109 0.644 HelixConstraint S117 Q123 0.617 HelixConstraint N135 Q143 0.738 HelixConstraint Y145 Q147 0.72