HelixConstraint L4 V22 0.708 HelixConstraint Y26 E38 0.619 HelixConstraint F54 A67 0.602 HelixConstraint F72 F86 0.683 HelixConstraint W100 A110 0.768 HelixConstraint P122 E133 0.643 HelixConstraint K141 Q154 0.661