// Hbonds to hold strands together Constraint V200.N K228.O 2 2.7 3.2 Constraint V200.O S230.N 2 2.7 3.2 Constraint F229.N S256.O 2 2.7 3.2 Constraint F229.O N258.N 2 2.7 3.2 Constraint L257.N E284.O 2 2.7 3.2 Constraint L257.O R286.N 2 2.7 3.2 Constraint L285.N K314.O 2 2.7 3.2 Constraint L285.O G316.N 2 2.7 3.2 // weaker constraint to hold C-terminal helix in place. Constraint E307.CB D337.CB 3 10 15 Constraint N296.CB A328.CB 3 5 8