loop_
    _pdbx_feature_assembly.id
    _pdbx_feature_assembly.assembly_id
    _pdbx_feature_assembly.feature_name
    _pdbx_feature_assembly.feature
    _pdbx_feature_assembly.feature_type
    _pdbx_feature_assembly.feature_assigned_by
    _pdbx_feature_assembly.feature_citation_id
        1 b1  'biological process'  'nitrogen metabolism' value GO GO
      




