Fold: Periplasmic binding protein-like II [53849]
consists of two similar intertwined domain with 3 layers (a/b/a) each: duplication mixed beta-sheet of 5 strands, order 21354; strand 5 is antiparallel to the rest
Protein: ATP phosphoribosyltransferase (ATP-PRTase, HisG), catalytic domain [82559]
there is an additional C-terminal allosteric domain in some species