SheetConstraint (T0304)R51 (T0304)G52 (T0304)Q87 (T0304)H88 hbond (T0304)G52 1 SheetConstraint (T0304)T89 (T0304)A94 (T0304)D102 (T0304)L97 hbond (T0304)V90 1 SheetConstraint (T0304)V114 (T0304)Y115 (T0304)C29 (T0304)F30 hbond (T0304)V114 1