HelixConstraint P9 D11 0.65 HelixConstraint S23 F27 0.716 HelixConstraint T37 A38 0.906 HelixConstraint T49 M52 0.924 HelixConstraint I54 L56 0.642 HelixConstraint S63 P64 0.846 HelixConstraint M66 W67 0.754 HelixConstraint W74 A77 0.608