loop_
    _pdbx_poly_seq_scheme.asym_id
    _pdbx_poly_seq_scheme.entity_id
    _pdbx_poly_seq_scheme.seq_id
    _pdbx_poly_seq_scheme.mon_id
    _pdbx_poly_seq_scheme.ndb_seq_num
    _pdbx_poly_seq_scheme.pdb_seq_num
    _pdbx_poly_seq_scheme.auth_seq_num
    _pdbx_poly_seq_scheme.pdb_mon_id
    _pdbx_poly_seq_scheme.auth_mon_id
    _pdbx_poly_seq_scheme.pdb_strand_id
    _pdbx_poly_seq_scheme.pdb_ins_code
A  1  1  DC   1  1   1  DC   DC    A  .
A  1  2  DG   2  2   2  DG   DG    A  .
A  1  3  DT   3  3   3  DT   DT    A  .
A  1  4  DA   4  4   4  DA   DA    A  .
A  1  5  DC   5  5   5  DC   DC    A  .
A  1  6  DG   6  6   6  DG   DG    A  .