Fold: PreATP-grasp domain [52439]
3 layers: a/b/a; parallel or mixed beta-sheet of 4 to 6 strands possible rudiment form of Rossmann-fold domain
Superfamily: PreATP-grasp domain [52440]
precedes the ATP-grasp domain common to all superfamily members, can contain a substrate-binding function uperfamily
Carbamoyl phosphate synthetase (CPS), large subunit PreATP-grasp domains [52450]
duplication: CPS large subunit contains two full BC-like lobes: carboxyphosphate and carbamoyl phosphate domains