HelixConstraint S20 A31 0.756 HelixConstraint E33 G39 0.702 HelixConstraint G50 V69 0.768 HelixConstraint S95 A103 0.845 HelixConstraint D109 V117 0.626 HelixConstraint D125 D126 0.76 HelixConstraint F129 A130 0.952 HelixConstraint L134 S137 0.917 HelixConstraint V139 R143 0.643