Data items in the PDBX_STRUCT_MSYM_GEN category record details about the generation of the minimal asymmetric unit. For instance, this category can be used to provide this information for helical and point symmetry systems. The PDBX_STRUCT_MSYM_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_msym_gen.msym_id _pdbx_struct_msym_gen.entity_inst_id _pdbx_struct_msym_gen.oper_expression A A 3 B B 4 C B 5