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          "simple_hTwist": 32.327
        },
        {
          "index": 5,
          "nt1": "///A/36",
          "nt2": "///A/101",
          "bp": "C-g",
          "name": "WC",
          "Saenger": "19-XIX",
          "LW": "cWW",
          "DSSR": "cW-W"
        }
      ]
    },
    {
      "index": 3,
      "helix_index": 2,
      "strand1": "UGCC",
      "strand2": "ACGG",
      "bp_type": "||||",
      "helix_form": "AAA",
      "helical_rise": 2.588,
      "helical_rise_std": 0.108,
      "helical_radius": 9.284,
      "helical_radius_std": 0.374,
      "helical_axis": [
        -0.263,
        -0.616,
        -0.743
      ],
      "point1": [
        -12.699,
        -4.732,
        -2.566
      ],
      "point2": [
        -14.729,
        -9.482,
        -8.299
      ],
      "num_pairs": 4,
      "pairs": [
        {
          "index": 1,
          "nt1": "///B/16",
          "nt2": "///B/27",
          "bp": "U-A",
          "name": "WC",
          "Saenger": "20-XX",
          "LW": "cWW",
          "DSSR": "cW-W",
          "bp1_params": [
            -0.148,
            -0.121,
            0.024,
            1.962,
            -4.861,
            0.568
          ],
          "step_params": [
            -0.470,
            -1.838,
            3.123,
            -0.192,
            8.207,
            29.042
          ],
          "heli_params": [
            -5.005,
            0.870,
            2.524,
            15.967,
            0.374,
            30.156
          ],
          "bp2_params": [
            -0.198,
            -0.190,
            -0.013,
            3.180,
            -9.862,
            0.035
          ],
          "groove_widths": [
            null,
            null,
            null,
            null
          ],
          "simple_Rise": 3.123,
          "simple_Twist": 29.480,
          "simple_hRise": 2.534,
          "simple_hTwist": 30.577
        },
        {
          "index": 2,
          "nt1": "///B/17",
          "nt2": "///B/26",
          "bp": "G-C",
          "name": "WC",
          "Saenger": "19-XIX",
          "LW": "cWW",
          "DSSR": "cW-W",
          "bp1_params": [
            -0.198,
            -0.190,
            -0.013,
            3.180,
            -9.862,
            0.035
          ],
          "step_params": [
            0.358,
            -1.782,
            3.180,
            0.849,
            3.345,
            33.723
          ],
          "heli_params": [
            -3.567,
            -0.485,
            3.003,
            5.747,
            -1.458,
            33.894
          ],
          "bp2_params": [
            0.298,
            -0.079,
            -0.071,
            5.029,
            -13.440,
            2.868
          ],
          "groove_widths": [
            null,
            null,
            null,
            null
          ],
          "simple_Rise": 3.180,
          "simple_Twist": 31.223,
          "simple_hRise": 2.986,
          "simple_hTwist": 31.409
        },
        {
          "index": 3,
          "nt1": "///B/18",
          "nt2": "///B/25",
          "bp": "C-G",
          "name": "WC",
          "Saenger": "19-XIX",
          "LW": "cWW",
          "DSSR": "cW-W",
          "bp1_params": [
            0.298,
            -0.079,
            -0.071,
            5.029,
            -13.440,
            2.868
          ],
          "step_params": [
            -0.661,
            -1.851,
            3.322,
            0.221,
            9.539,
            33.131
          ],
          "heli_params": [
            -4.521,
            1.148,
            2.697,
            16.312,
            -0.377,
            34.441
          ],
          "bp2_params": [
            0.238,
            -0.199,
            -0.260,
            0.133,
            0.777,
            -3.023
          ],
          "groove_widths": [
            null,
            null,
            null,
            null
          ],
          "simple_Rise": 3.322,
          "simple_Twist": 33.586,
          "simple_hRise": 2.707,
          "simple_hTwist": 34.877
        },
        {
          "index": 4,
          "nt1": "///B/19",
          "nt2": "///B/24",
          "bp": "C-G",
          "name": "WC",
          "Saenger": "19-XIX",
          "LW": "cWW",
          "DSSR": "cW-W"
        }
      ]
    },
    {
      "index": 4,
      "helix_index": 2,
      "strand1": "CUUCC",
      "strand2": "GAAGg",
      "bp_type": "|||||",
      "helix_form": "AAAA",
      "helical_rise": 2.339,
      "helical_rise_std": 0.200,
      "helical_radius": 8.848,
      "helical_radius_std": 0.621,
      "helical_axis": [
        0.301,
        -0.070,
        0.951
      ],
      "point1": [
        -12.206,
        2.381,
        14.656
      ],
      "point2": [
        -9.439,
        1.734,
        23.392
      ],
      "num_pairs": 5,
      "pairs": [
        {
          "index": 1,
          "nt1": "///B/32",
          "nt2": "///B/5",
          "bp": "C-G",
          "name": "WC",
          "Saenger": "19-XIX",
          "LW": "cWW",
          "DSSR": "cW-W",
          "bp1_params": [
            0.096,
            -0.033,
            0.143,
            5.871,
            -21.980,
            0.139
          ],
          "step_params": [
            -0.626,
            -1.467,
            3.353,
            -8.549,
            12.073,
            31.040
          ],
          "heli_params": [
            -4.331,
            -0.244,
            2.691,
            21.122,
            14.956,
            34.307
          ],
          "bp2_params": [
            -0.141,
            -0.199,
            0.466,
            2.464,
            -19.249,
            -0.211
          ],
          "groove_widths": [
            null,
            null,
            null,
            null
          ],
          "simple_Rise": 3.353,
          "simple_Twist": 32.244,
          "simple_hRise": 2.724,
          "simple_hTwist": 35.394
        },
        {
          "index": 2,
          "nt1": "///B/33",
          "nt2": "///B/4",
          "bp": "U-A",
          "name": "WC",
          "Saenger": "20-XX",
          "LW": "cWW",
          "DSSR": "cW-W",
          "bp1_params": [
            -0.141,
            -0.199,
            0.466,
            2.464,
            -19.249,
            -0.211
          ],
          "step_params": [
            -0.150,
            -1.137,
            3.000,
            0.069,
            5.588,
            34.982
          ],
          "heli_params": [
            -2.601,
            0.255,
            2.791,
            9.222,
            -0.114,
            35.412
          ],
          "bp2_params": [
            0.009,
            -0.235,
            0.099,
            5.592,
            -21.510,
            0.062
          ],
          "groove_widths": [
            null,
            null,
            null,
            null
          ],
          "simple_Rise": 3.000,
          "simple_Twist": 34.359,
          "simple_hRise": 2.786,
          "simple_hTwist": 34.797
        },
        {
          "index": 3,
          "nt1": "///B/34",
          "nt2": "///B/3",
          "bp": "U-A",
          "name": "WC",
          "Saenger": "20-XX",
          "LW": "cWW",
          "DSSR": "cW-W",
          "bp1_params": [
            0.009,
            -0.235,
            0.099,
            5.592,
            -21.510,
            0.062
          ],
          "step_params": [
            0.462,
            -1.454,
            3.220,
            0.174,
            7.633,
            34.275
          ],
          "heli_params": [
            -3.485,
            -0.741,
            2.843,
            12.756,
            -0.291,
            35.091
          ],
          "bp2_params": [
            0.113,
            0.002,
            0.185,
            2.183,
            -15.809,
            2.169
          ],
          "groove_widths": [
            null,
            null,
            null,
            null
          ],
          "simple_Rise": 3.220,
          "simple_Twist": 33.498,
          "simple_hRise": 2.832,
          "simple_hTwist": 34.333
        },
        {
          "index": 4,
          "nt1": "///B/35",
          "nt2": "///B/2",
          "bp": "C-G",
          "name": "WC",
          "Saenger": "19-XIX",
          "LW": "cWW",
          "DSSR": "cW-W",
          "bp1_params": [
            0.113,
            0.002,
            0.185,
            2.183,
            -15.809,
            2.169
          ],
          "step_params": [
            -0.415,
            -2.005,
            3.211,
            1.118,
            5.605,
            30.020
          ],
          "heli_params": [
            -4.833,
            0.994,
            2.782,
            10.700,
            -2.135,
            30.547
          ],
          "bp2_params": [
            -0.066,
            -0.309,
            -0.011,
            2.918,
            -7.012,
            -7.576
          ],
          "groove_widths": [
            null,
            null,
            null,
            null
          ],
          "simple_Rise": 3.211,
          "simple_Twist": 30.998,
          "simple_hRise": 2.798,
          "simple_hTwist": 31.508
        },
        {
          "index": 5,
          "nt1": "///B/36",
          "nt2": "///B/101",
          "bp": "C-g",
          "name": "WC",
          "Saenger": "19-XIX",
          "LW": "cWW",
          "DSSR": "cW-W"
        }
      ]
    }
  ],
  "num_coaxStacks": 2,
  "coaxStacks": [
    {
      "index": 1,
      "helix_index": 1,
      "num_stems": 2,
      "stem_indices": [
        1,
        2
      ]
    },
    {
      "index": 2,
      "helix_index": 2,
      "num_stems": 2,
      "stem_indices": [
        3,
        4
      ]
    }
  ],
  "num_stacks": 14,
  "stacks": [
    {
      "index": 1,
      "num_nts": 2,
      "nts_short": "AU",
      "nts_long": "///A/15,///A/16"
    },
    {
      "index": 2,
      "num_nts": 2,
      "nts_short": "GG",
      "nts_long": "///A/20,///A/24"
    },
    {
      "index": 3,
      "num_nts": 2,
      "nts_short": "AG",
      "nts_long": "///A/27,///A/28"
    },
    {
      "index": 4,
      "num_nts": 2,
      "nts_short": "AU",
      "nts_long": "///B/15,///B/16"
    },
    {
      "index": 5,
      "num_nts": 2,
      "nts_short": "CG",
      "nts_long": "///B/19,///B/20"
    },
    {
      "index": 6,
      "num_nts": 2,
      "nts_short": "AG",
      "nts_long": "///B/27,///B/28"
    },
    {
      "index": 7,
      "num_nts": 3,
      "nts_short": "GAU",
      "nts_long": "///A/5,///A/6,///A/8"
    },
    {
      "index": 8,
      "num_nts": 3,
      "nts_short": "AAA",
      "nts_long": "///A/21,///A/22,///A/23"
    },
    {
      "index": 9,
      "num_nts": 3,
      "nts_short": "CAC",
      "nts_long": "///A/30,///A/31,///A/32"
    },
    {
      "index": 10,
      "num_nts": 3,
      "nts_short": "GAA",
      "nts_long": "///B/5,///B/6,///B/29"
    },
    {
      "index": 11,
      "num_nts": 3,
      "nts_short": "CAC",
      "nts_long": "///B/30,///B/31,///B/32"
    },
    {
      "index": 12,
      "num_nts": 4,
      "nts_short": "AAAG",
      "nts_long": "///B/21,///B/22,///B/23,///B/24"
    },
    {
      "index": 13,
      "num_nts": 5,
      "nts_short": "GCAAA",
      "nts_long": "///A/9,///A/14,///A/13,///A/12,///A/11"
    },
    {
      "index": 14,
      "num_nts": 5,
      "nts_short": "GCAAA",
      "nts_long": "///B/9,///B/14,///B/13,///B/12,///B/11"
    }
  ],
  "nonStack": {
    "num_nts": 4,
    "nts_short": "UUUU",
    "nts_long": "///A/7,///A/10,///B/7,///B/10"
  },
  "num_atom2bases": 7,
  "atom2bases": [
    {
      "index": 1,
      "type": "phosphate",
      "atom": "///A/12/OP2",
      "nt": "///A/10",
      "vert_dist": 3.086
    },
    {
      "index": 2,
      "type": "sugar",
      "atom": "///A/16/O4'",
      "nt": "///A/15",
      "vert_dist": 3.428
    },
    {
      "index": 3,
      "type": "phosphate",
      "atom": "///A/22/OP2",
      "nt": "///A/20",
      "vert_dist": 3.016
    },
    {
      "index": 4,
      "type": "sugar",
      "atom": "///A/31/O4'",
      "nt": "///A/30",
      "vert_dist": 3.412
    },
    {
      "index": 5,
      "type": "phosphate",
      "atom": "///B/12/OP2",
      "nt": "///B/10",
      "vert_dist": 2.984
    },
    {
      "index": 6,
      "type": "sugar",
      "atom": "///B/16/O4'",
      "nt": "///B/15",
      "vert_dist": 3.352
    },
    {
      "index": 7,
      "type": "phosphate",
      "atom": "///B/22/OP2",
      "nt": "///B/20",
      "vert_dist": 2.973
    }
  ],
  "num_hairpins": 2,
  "hairpins": [
    {
      "index": 1,
      "type": "hairpin loop",
      "bridging_nts": [
        4
      ],
      "stem_indices": [
        1
      ],
      "summary": "[1] 4 [A.19 A.24] 4",
      "num_nts": 6,
      "nts_short": "CGAAAG",
      "nts_long": "///A/19,///A/20,///A/21,///A/22,///A/23,///A/24",
      "num_stems": 1,
      "bridges": [
        {
          "index": 1,
          "num_nts": 4,
          "nts_short": "GAAA",
          "nts_long": "///A/20,///A/21,///A/22,///A/23"
        }
      ]
    },
    {
      "index": 2,
      "type": "hairpin loop",
      "bridging_nts": [
        4
      ],
      "stem_indices": [
        3
      ],
      "summary": "[1] 4 [B.19 B.24] 4",
      "num_nts": 6,
      "nts_short": "CGAAAG",
      "nts_long": "///B/19,///B/20,///B/21,///B/22,///B/23,///B/24",
      "num_stems": 1,
      "bridges": [
        {
          "index": 1,
          "num_nts": 4,
          "nts_short": "GAAA",
          "nts_long": "///B/20,///B/21,///B/22,///B/23"
        }
      ]
    }
  ],
  "num_iloops": 2,
  "iloops": [
    {
      "index": 1,
      "type": "asymmetric internal loop",
      "bridging_nts": [
        10,
        4
      ],
      "stem_indices": [
        2,
        1
      ],
      "summary": "[2] 10 4 [A.5 A.32 A.16 A.27] 5 4 k-turn:undecided",
      "num_nts": 18,
      "nts_short": "GAUUGUAAACAUAGACAC",
      "nts_long": "///A/5,///A/6,///A/7,///A/8,///A/9,///A/10,///A/11,///A/12,///A/13,///A/14,///A/15,///A/16,///A/27,///A/28,///A/29,///A/30,///A/31,///A/32",
      "num_stems": 2,
      "bridges": [
        {
          "index": 1,
          "num_nts": 10,
          "nts_short": "AUUGUAAACA",
          "nts_long": "///A/6,///A/7,///A/8,///A/9,///A/10,///A/11,///A/12,///A/13,///A/14,///A/15"
        },
        {
          "index": 2,
          "num_nts": 4,
          "nts_short": "GACA",
          "nts_long": "///A/28,///A/29,///A/30,///A/31"
        }
      ]
    },
    {
      "index": 2,
      "type": "asymmetric internal loop",
      "bridging_nts": [
        10,
        4
      ],
      "stem_indices": [
        4,
        3
      ],
      "summary": "[2] 10 4 [B.5 B.32 B.16 B.27] 5 4 k-turn:undecided",
      "num_nts": 18,
      "nts_short": "GAUUGUAAACAUAGACAC",
      "nts_long": "///B/5,///B/6,///B/7,///B/8,///B/9,///B/10,///B/11,///B/12,///B/13,///B/14,///B/15,///B/16,///B/27,///B/28,///B/29,///B/30,///B/31,///B/32",
      "num_stems": 2,
      "bridges": [
        {
          "index": 1,
          "num_nts": 10,
          "nts_short": "AUUGUAAACA",
          "nts_long": "///B/6,///B/7,///B/8,///B/9,///B/10,///B/11,///B/12,///B/13,///B/14,///B/15"
        },
        {
          "index": 2,
          "num_nts": 4,
          "nts_short": "GACA",
          "nts_long": "///B/28,///B/29,///B/30,///B/31"
        }
      ]
    }
  ],
  "num_Aminors": 4,
  "Aminors": [
    {
      "index": 1,
      "type": "X",
      "desc_short": "A vs A-U (WC)",
      "desc_long": "///A/11 vs ///A/4,///A/33",
      "A_nt1": {
        "desc": "///A/11 vs ///A/4",
        "face_type": "+",
        "hbonds_num": 0,
        "hbonds_desc": ""
      },
      "A_nt2": {
        "desc": "///A/11 vs ///A/33",
        "face_type": "-",
        "hbonds_num": 2,
        "hbonds_desc": "N6(amino)-O2(carbonyl)[2.76],N1-O2'(hydroxyl)[2.45]"
      }
    },
    {
      "index": 2,
      "type": "X",
      "desc_short": "A vs G-C (WC)",
      "desc_long": "///A/12 vs ///A/5,///A/32",
      "A_nt1": {
        "desc": "///A/12 vs ///A/5",
        "face_type": "+",
        "hbonds_num": 3,
        "hbonds_desc": "N6(amino)-O2'(hydroxyl)[2.92],N6(amino)-N3[3.03],N1-N2(amino)[2.98]"
      },
      "A_nt2": {
        "desc": "///A/12 vs ///A/32",
        "face_type": "-",
        "hbonds_num": 0,
        "hbonds_desc": ""
      }
    },
    {
      "index": 3,
      "type": "X",
      "desc_short": "A vs A-U (WC)",
      "desc_long": "///B/11 vs ///B/4,///B/33",
      "A_nt1": {
        "desc": "///B/11 vs ///B/4",
        "face_type": "+",
        "hbonds_num": 0,
        "hbonds_desc": ""
      },
      "A_nt2": {
        "desc": "///B/11 vs ///B/33",
        "face_type": "-",
        "hbonds_num": 2,
        "hbonds_desc": "N6(amino)-O2(carbonyl)[2.88],N1-O2'(hydroxyl)[2.59]"
      }
    },
    {
      "index": 4,
      "type": "X",
      "desc_short": "A vs G-C (WC)",
      "desc_long": "///B/12 vs ///B/5,///B/32",
      "A_nt1": {
        "desc": "///B/12 vs ///B/5",
        "face_type": "+",
        "hbonds_num": 3,
        "hbonds_desc": "N6(amino)-O2'(hydroxyl)[3.06],N6(amino)-N3[3.11],N1-N2(amino)[2.93]"
      },
      "A_nt2": {
        "desc": "///B/12 vs ///B/32",
        "face_type": "-",
        "hbonds_num": 0,
        "hbonds_desc": ""
      }
    }
  ],
  "num_Kturns": 2,
  "Kturns": [
    {
      "index": 1,
      "type": "Undecided case [A-G]",
      "iloop_index": 1,
      "bounding_stems": [
        2,
        1
      ],
      "Cstem_index": 2,
      "NCstem_index": 1,
      "Cstem_pair": "G-C (///A/5,///A/32) WC",
      "NCstem_pair": "U-A (///A/16,///A/27) WC",
      "GA_pair": "A-G (///A/15,///A/28) Sheared",
      "bending_angle": 54.980,
      "strand1": {
        "num_nts": 19,
        "nts_short": "gGAAGAUUGUAAACAUGCC",
        "nts_long": "///A/101,///A/2,///A/3,///A/4,///A/5,///A/6,///A/7,///A/8,///A/9,///A/10,///A/11,///A/12,///A/13,///A/14,///A/15,///A/16,///A/17,///A/18,///A/19"
      },
      "strand2": {
        "num_nts": 13,
        "nts_short": "GGCAGACACUUCC",
        "nts_long": "///A/24,///A/25,///A/26,///A/27,///A/28,///A/29,///A/30,///A/31,///A/32,///A/33,///A/34,///A/35,///A/36"
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      "    8 C       2.2500   5.0000  -0.4000",
      "    9 C      -2.2500   5.0000   0.4000",
      "   10 C      -2.2500  -5.0000   0.4000",
      "   11 C      -2.2500  -5.0000  -0.4000",
      "   12 C      -2.2500   5.0000  -0.4000",
      "    1     1     2",
      "    2     2     3",
      "    3     3     4",
      "    4     4     1",
      "    5     5     6",
      "    6     6     7",
      "    7     7     8",
      "    8     5     8",
      "    9     9     5",
      "   10    10     6",
      "   11    11     7",
      "   12    12     8"
    ]
  },
  "metadata": {
    "license": "http://innovation.columbia.edu/technologies/CU20391",
    "url": "http://x3dna.org/",
    "url_alt": "http://home.x3dna.org/",
    "forum": "http://forum.x3dna.org/",
    "citation": "Lu et al. (2015). 'DSSR: an integrated software tool for dissecting the spatial structure of RNA.' Nucleic Acids Res., 43(21):e142 [doi:10.1093/nar/gkv716].",
    "str_id": "8hze",
    "num_naChains": 2,
    "naChains": "A=36,B=36",
    "num_atoms": 1789,
    "num_waters": 151,
    "num_metals": 12,
    "metals_desc": "Mg=11,K=1",
    "num_notes": 52,
    "notes": [
      {
        "Aminors": "A-minor interactions (including types I and II)"
      },
      {
        "Cstem_index": "stem index of the 'Canonical' helix in k-turn"
      },
      {
        "Cstem_pair": "Cstem bp delineating the k-turn internal loop"
      },
      {
        "Dp": "perpendicular distance of the 3' P atom to the glycosidic bond"
      },
      {
        "GA_pair": "sheared G-A pair in k-turn"
      },
      {
        "HtypePknot": "H-type pseudoknot"
      },
      {
        "Kturn": "kink-turn (k-turn)"
      },
      {
        "LW": "Leontis-Westhof"
      },
      {
        "NCstem_index": "stem index of the 'Non-Canonical' helix in k-turn"
      },
      {
        "NCstem_pair": "NCstem bp delineating the k-turn internal loop"
      },
      {
        "Uturn": "U-turn of the UNR- or GNRA-type"
      },
      {
        "aa": "amino acid"
      },
      {
        "atom_pair": "symbols of the two atoms involved in an H-bond"
      },
      {
        "auxfiles": "auxiliary files"
      },
      {
        "glyco_bond": "conformation of base related to sugar (syn or anti)"
      },
      {
        "bb_type": "backbone conformation, BI or BII"
      },
      {
        "bending_angle": "angle between two helical axes"
      },
      {
        "bp": "base pair"
      },
      {
        "bseq": "base sequence in one-letter code"
      },
      {
        "bulge": "bulge loop"
      },
      {
        "coaxStacks": "coaxial stacking of stems within a helix"
      },
      {
        "dbn": "dot bracket notation"
      },
      {
        "desc": "description"
      },
      {
        "donAcc_type": "donor/acceptor type of the atom pair in an H-bond"
      },
      {
        "epsilon_zeta": "difference between epsilon and zeta torsion angles"
      },
      {
        "hairpin": "hairpin loop"
      },
      {
        "hbond": "hydrogen bond (H-bond)"
      },
      {
        "helix": "defined by base-stacking interactions, regardless of bp type and backbone connectivity"
      },
      {
        "id": "identifier"
      },
      {
        "iloop": "internal loop"
      },
      {
        "index": "serial number"
      },
      {
        "isoCanonPairs": "isolated canonical pairs"
      },
      {
        "junction": "(multi-branched) junction loop"
      },
      {
        "kissingLoop": "kissing loop"
      },
      {
        "multiplet": "3+ bases in a coplanar geometry"
      },
      {
        "na": "nucleic acid"
      },
      {
        "nonPair": "two nts not forming a pair, but with H-bonding/stacking interactions"
      },
      {
        "nonStack": "nucleotide not involved in stacking interactions"
      },
      {
        "nt": "nucleotide"
      },
      {
        "num": "number"
      },
      {
        "oArea": "overlap areas between two bases, including exocyclic atoms"
      },
      {
        "oArea_ring": "overlap areas between two bases, including only ring atoms"
      },
      {
        "phosContacts": "H-bonding and atom-capping interactions involving a phosphate"
      },
      {
        "residue_pair": "types of the two residues involved in an H-bond"
      },
      {
        "rmsd": "root-mean-squares deviation"
      },
      {
        "serNum": "serial number"
      },
      {
        "ssSegments": "single-stranded segments not involved in loops"
      },
      {
        "ssZp": "Z-coordinate of the 3' phosphorus atom with reference to the 5' base plane"
      },
      {
        "sstr": "secondary structure in dbn"
      },
      {
        "stem": "helix consisting of only canonical pairs, with a continuous backbone"
      },
      {
        "str_id": "structure identifier, derived from inpfile with extension removed"
      },
      {
        "vert_dist": "vertical distance from an atom to a base plane"
      }
    ],
    "num_auxfiles": 19,
    "auxfiles": [
      {
        "index": 1,
        "name": "dssr-pairs.pdb",
        "desc": "an ensemble of base pairs"
      },
      {
        "index": 2,
        "name": "dssr-multiplets.pdb",
        "desc": "an ensemble of multiplets"
      },
      {
        "index": 3,
        "name": "dssr-stems.pdb",
        "desc": "an ensemble of stems"
      },
      {
        "index": 4,
        "name": "dssr-helices.pdb",
        "desc": "an ensemble of helices (coaxial stacking)"
      },
      {
        "index": 5,
        "name": "dssr-hairpins.pdb",
        "desc": "an ensemble of hairpin loops"
      },
      {
        "index": 6,
        "name": "dssr-iloops.pdb",
        "desc": "an ensemble of internal loops"
      },
      {
        "index": 7,
        "name": "dssr-2ndstrs.bpseq",
        "desc": "secondary structure in bpseq format"
      },
      {
        "index": 8,
        "name": "dssr-2ndstrs.ct",
        "desc": "secondary structure in connectivity table format"
      },
      {
        "index": 9,
        "name": "dssr-2ndstrs.dbn",
        "desc": "secondary structure in dot-bracket notation"
      },
      {
        "index": 10,
        "name": "dssr-torsions.txt",
        "desc": "backbone torsion angles and suite names"
      },
      {
        "index": 11,
        "name": "dssr-splays.pdb",
        "desc": "an ensemble of splayed-apart units"
      },
      {
        "index": 12,
        "name": "dssr-Aminors.pdb",
        "desc": "an ensemble of A minor motifs (types I and II)"
      },
      {
        "index": 13,
        "name": "dssr-Kturns.pdb",
        "desc": "an ensemble of kink-turn motifs"
      },
      {
        "index": 14,
        "name": "dssr-stacks.pdb",
        "desc": "an ensemble of base stacks"
      },
      {
        "index": 15,
        "name": "dssr-atom2bases.pdb",
        "desc": "an ensemble of atom-base stacking interactions"
      },
      {
        "index": 16,
        "name": "dssr-rotmat.txt",
        "desc": "position vector and rotation matrix"
      },
      {
        "index": 17,
        "name": "dssr-viewV.pdb",
        "desc": "vertical view of the principal moment of inertia"
      },
      {
        "index": 18,
        "name": "dssr-viewH.pdb",
        "desc": "horizontal view of the principal moment of inertia"
      },
      {
        "index": 19,
        "name": "dssr-viewT.pdb",
        "desc": "top view of the principal moment of inertia"
      }
    ],
    "time_used": "999"
  }
}
