Data items in the PDBX_STRUCT_ASYM_GEN category record details about the generation of the crystallographic asymmetric unit. The PDBX_STRUCT_ASYM_GEN data items provide the specifications of the components that constitute the asymmetric unit in terms of cartesian transformations of deposited coordinates.
loop_ _pdbx_struct_asym_gen.asym_id _pdbx_struct_asym_gen.entity_inst_id _pdbx_struct_asym_gen.oper_expression A A 1 B B 1