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        {
          "index": 2,
          "num_nts": 0,
          "nts_short": "",
          "nts_long": ""
        }
      ]
    },
    {
      "index": 3,
      "type": "bulge",
      "bridging_nts": [
        0,
        1
      ],
      "stem_indices": [
        5,
        -5
      ],
      "summary": "[2] 0 1 [B.10 B.32 B.11 B.30] 4 1",
      "num_nts": 5,
      "nts_short": "CCGAG",
      "nts_long": "///B/10,///B/11,///B/30,///B/31,///B/32",
      "num_stems": 2,
      "bridges": [
        {
          "index": 1,
          "num_nts": 0,
          "nts_short": "",
          "nts_long": ""
        },
        {
          "index": 2,
          "num_nts": 1,
          "nts_short": "A",
          "nts_long": "///B/31"
        }
      ]
    },
    {
      "index": 4,
      "type": "bulge",
      "bridging_nts": [
        1,
        0
      ],
      "stem_indices": [
        -6,
        6
      ],
      "summary": "[2] 1 0 [B.14 B.53 B.16 B.52] 1 8",
      "num_nts": 5,
      "nts_short": "GCCGC",
      "nts_long": "///B/14,///B/15,///B/16,///B/52,///B/53",
      "num_stems": 2,
      "bridges": [
        {
          "index": 1,
          "num_nts": 1,
          "nts_short": "C",
          "nts_long": "///B/15"
        },
        {
          "index": 2,
          "num_nts": 0,
          "nts_short": "",
          "nts_long": ""
        }
      ]
    },
    {
      "index": 5,
      "type": "bulge",
      "bridging_nts": [
        2,
        0
      ],
      "stem_indices": [
        1,
        2
      ],
      "summary": "[2] 2 0 [A.4 A.36 A.7 A.35] 3 4",
      "num_nts": 6,
      "nts_short": "UACCGG",
      "nts_long": "///A/4,///A/5,///A/6,///A/7,///A/35,///A/36",
      "num_stems": 2,
      "bridges": [
        {
          "index": 1,
          "num_nts": 2,
          "nts_short": "AC",
          "nts_long": "///A/5,///A/6"
        },
        {
          "index": 2,
          "num_nts": 0,
          "nts_short": "",
          "nts_long": ""
        }
      ]
    },
    {
      "index": 6,
      "type": "bulge",
      "bridging_nts": [
        2,
        0
      ],
      "stem_indices": [
        4,
        5
      ],
      "summary": "[2] 2 0 [B.4 B.36 B.7 B.35] 3 4",
      "num_nts": 6,
      "nts_short": "UACCGG",
      "nts_long": "///B/4,///B/5,///B/6,///B/7,///B/35,///B/36",
      "num_stems": 2,
      "bridges": [
        {
          "index": 1,
          "num_nts": 2,
          "nts_short": "AC",
          "nts_long": "///B/5,///B/6"
        },
        {
          "index": 2,
          "num_nts": 0,
          "nts_short": "",
          "nts_long": ""
        }
      ]
    }
  ],
  "num_ssSegments": 3,
  "ssSegments": [
    {
      "index": 1,
      "num_nts": 1,
      "nts_short": "A",
      "nts_long": "///A/1"
    },
    {
      "index": 2,
      "num_nts": 2,
      "nts_short": "AG",
      "nts_long": "///A/54,///A/55"
    },
    {
      "index": 3,
      "num_nts": 2,
      "nts_short": "AG",
      "nts_long": "///B/54,///B/55"
    }
  ],
  "num_kissingLoops": 4,
  "kissingLoops": [
    {
      "index": 1,
      "stem_index": -5,
      "is_isoCanonPair": true,
      "hairpin_indices": [
        4,
        6
      ]
    },
    {
      "index": 2,
      "stem_index": -2,
      "is_isoCanonPair": true,
      "hairpin_indices": [
        1,
        3
      ]
    },
    {
      "index": 3,
      "stem_index": 2,
      "hairpin_indices": [
        1,
        3
      ]
    },
    {
      "index": 4,
      "stem_index": 5,
      "hairpin_indices": [
        4,
        6
      ]
    }
  ],
  "num_Aminors": 4,
  "Aminors": [
    {
      "index": 1,
      "type": "II",
      "desc_short": "A vs C-G (WC)",
      "desc_long": "///A/12 vs ///A/17,///A/51",
      "A_nt1": {
        "desc": "///A/12 vs ///A/17",
        "face_type": "-",
        "hbonds_num": 1,
        "hbonds_desc": "O2'(hydroxyl)-O2'(hydroxyl)[3.13]"
      },
      "A_nt2": {
        "desc": "///A/12 vs ///A/51",
        "face_type": "+",
        "hbonds_num": 0,
        "hbonds_desc": ""
      }
    },
    {
      "index": 2,
      "type": "I",
      "desc_short": "A vs C-G (WC)",
      "desc_long": "///A/13 vs ///A/16,///A/52",
      "A_nt1": {
        "desc": "///A/13 vs ///A/16",
        "face_type": "-",
        "hbonds_num": 2,
        "hbonds_desc": "O2'(hydroxyl)-O2'(hydroxyl)[2.58],O2'(hydroxyl)-O2(carbonyl)[2.63]"
      },
      "A_nt2": {
        "desc": "///A/13 vs ///A/52",
        "face_type": "+",
        "hbonds_num": 3,
        "hbonds_desc": "N6(amino)-O2'(hydroxyl)[3.33],N1-O2'(hydroxyl)[2.91],N3-N2(amino)[2.85]"
      }
    },
    {
      "index": 3,
      "type": "X",
      "desc_short": "A vs C-G (WC)",
      "desc_long": "///B/12 vs ///B/17,///B/51",
      "A_nt1": {
        "desc": "///B/12 vs ///B/17",
        "face_type": "-",
        "hbonds_num": 2,
        "hbonds_desc": "O2'(hydroxyl)-O3'[2.88],O2'(hydroxyl)-O2'(hydroxyl)[3.02]"
      },
      "A_nt2": {
        "desc": "///B/12 vs ///B/51",
        "face_type": "+",
        "hbonds_num": 0,
        "hbonds_desc": ""
      }
    },
    {
      "index": 4,
      "type": "I",
      "desc_short": "A vs C-G (WC)",
      "desc_long": "///B/13 vs ///B/16,///B/52",
      "A_nt1": {
        "desc": "///B/13 vs ///B/16",
        "face_type": "-",
        "hbonds_num": 2,
        "hbonds_desc": "O2'(hydroxyl)-O2'(hydroxyl)[2.56],O2'(hydroxyl)-O2(carbonyl)[2.46]"
      },
      "A_nt2": {
        "desc": "///B/13 vs ///B/52",
        "face_type": "+",
        "hbonds_num": 2,
        "hbonds_desc": "N1-O2'(hydroxyl)[3.02],N3-N2(amino)[2.85]"
      }
    }
  ],
  "num_riboseZippers": 2,
  "riboseZippers": [
    {
      "index": 1,
      "num_nts": 4,
      "nts_short": "AACC",
      "nts_long": "///A/12,///A/13,///A/16,///A/17"
    },
    {
      "index": 2,
      "num_nts": 4,
      "nts_short": "AACC",
      "nts_long": "///B/12,///B/13,///B/16,///B/17"
    }
  ],
  "num_splayUnits": 14,
  "splayUnits": [
    {
      "index": 1,
      "num_nts": 2,
      "nts_short": "UA",
      "nts_long": "///A/4,///A/5"
    },
    {
      "index": 2,
      "num_nts": 2,
      "nts_short": "CC",
      "nts_long": "///A/6,///A/7"
    },
    {
      "index": 3,
      "num_nts": 2,
      "nts_short": "CA",
      "nts_long": "///A/11,///A/12"
    },
    {
      "index": 4,
      "num_nts": 3,
      "nts_short": "GCC",
      "nts_long": "///A/14,///A/15,///A/16"
    },
    {
      "index": 5,
      "num_nts": 4,
      "nts_short": "AGAG",
      "nts_long": "///A/29,///A/30,///A/31,///A/32"
    },
    {
      "index": 6,
      "num_nts": 2,
      "nts_short": "UA",
      "nts_long": "///A/38,///A/39"
    },
    {
      "index": 7,
      "num_nts": 2,
      "nts_short": "UC",
      "nts_long": "///A/44,///A/45"
    },
    {
      "index": 8,
      "num_nts": 2,
      "nts_short": "UA",
      "nts_long": "///B/4,///B/5"
    },
    {
      "index": 9,
      "num_nts": 2,
      "nts_short": "CC",
      "nts_long": "///B/6,///B/7"
    },
    {
      "index": 10,
      "num_nts": 2,
      "nts_short": "CA",
      "nts_long": "///B/11,///B/12"
    },
    {
      "index": 11,
      "num_nts": 3,
      "nts_short": "GCC",
      "nts_long": "///B/14,///B/15,///B/16"
    },
    {
      "index": 12,
      "num_nts": 4,
      "nts_short": "AGAG",
      "nts_long": "///B/29,///B/30,///B/31,///B/32"
    },
    {
      "index": 13,
      "num_nts": 2,
      "nts_short": "UA",
      "nts_long": "///B/38,///B/39"
    },
    {
      "index": 14,
      "num_nts": 2,
      "nts_short": "UC",
      "nts_long": "///B/44,///B/45"
    }
  ],
  "pseudoknot_order": 2,
  "pseudoknot_nts": [
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      "index": 1,
      "symbols": "[]",
      "num_nts": 32,
      "nts_short": "AGUCCUCCGGGGGGCUAGUCCUCCGGGGGGCU",
      "nts_long": "///A/2,///A/3,///A/4,///A/7,///A/8,///A/9,///A/10,///A/11,///A/30,///A/32,///A/33,///A/34,///A/35,///A/36,///A/37,///A/38,///B/2,///B/3,///B/4,///B/7,///B/8,///B/9,///B/10,///B/11,///B/30,///B/32,///B/33,///B/34,///B/35,///B/36,///B/37,///B/38"
    },
    {
      "index": 2,
      "symbols": "{}",
      "num_nts": 4,
      "nts_short": "CGCG",
      "nts_long": "///A/6,///A/27,///B/6,///B/27"
    }
  ],
  "dbn": {
    "all_chains": {
      "num_nts": 109,
      "num_chars": 110,
      "bseq": "AAGUACCCUCCAAGCCCUACAGGUUGGAAGAGGGGGCUAUCAGUCCUGUAGGCAG&AGUACCCUCCAAGCCCUACAGGUUGGAAGAGGGGGCUAUCAGUCCUGUAGGCAG",
      "sstr": ".[[[.{[[[[[..(.((((((((...}..].]]]]]]]......)))))))))..&[[[.{[[[[[..(.((((((((...}..].]]]]]]]......)))))))))..",
      "form": ".AA...AAAA.B....AAAAAAAA.......AAA..A.......AA.AAAA...-&AA...AAAA.B...AAAAAAAAA........AA..A.......AA.AAAA.AA-"
    },
    "chain_A": {
      "num_nts": 55,
      "num_chars": 55,
      "bseq": "AAGUACCCUCCAAGCCCUACAGGUUGGAAGAGGGGGCUAUCAGUCCUGUAGGCAG",
      "sstr": ".[[[.{[[[[[..(.((((((((...}..].]]]]]]]......)))))))))..",
      "form": ".AA...AAAA.B....AAAAAAAA.......AAA..A.......AA.AAAA...-"
    },
    "chain_B": {
      "num_nts": 54,
      "num_chars": 54,
      "bseq": "AGUACCCUCCAAGCCCUACAGGUUGGAAGAGGGGGCUAUCAGUCCUGUAGGCAG",
      "sstr": "[[[.{[[[[[..(.((((((((...}..].]]]]]]]......)))))))))..",
      "form": "AA...AAAA.B...AAAAAAAAA........AA..A.......AA.AAAA.AA-"
    }
  },
  "chains": {
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      "num_nts": 55,
      "bseq": "AAGUACCCUCCAAGCCCUACAGGUUGGAAGAGGGGGCUAUCAGUCCUGUAGGCAG",
      "sstr": ".[[[.{[[[[[..(.((((((((...}..].]]]]]]]......)))))))))..",
      "form": ".AA...AAAA.B....AAAAAAAA.......AAA..A.......AA.AAAA...-",
      "helical_rise": 0.076,
      "helical_rise_std": 3.104,
      "helical_axis": [
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        -0.749,
        -0.331
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      "point1": [
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        -4.308,
        17.009
      ],
      "point2": [
        26.283,
        -7.161,
        15.749
      ],
      "num_chars": 163,
      "suite": "A1LA1aG1aU!!A2[C2aC1aC1aU1aC!!C!!A!!A!!G6pC2hC1aC!!U1LA1aC!!A1aG1aG1aU1aU1aG1gG1aA1bA4pG2uA!!G1aG1aG1aG1aG1aC1bU!!A1bU4aC1aA1aG1bU!!C1aC1aU1eG1aU1aA!!G1aG1aC!!A1cG"
    },
    "chain_B": {
      "num_nts": 54,
      "bseq": "AGUACCCUCCAAGCCCUACAGGUUGGAAGAGGGGGCUAUCAGUCCUGUAGGCAG",
      "sstr": "[[[.{[[[[[..(.((((((((...}..].]]]]]]]......)))))))))..",
      "form": "AA...AAAA.B...AAAAAAAAA........AA..A.......AA.AAAA.AA-",
      "helical_rise": 0.098,
      "helical_rise_std": 3.114,
      "helical_axis": [
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        0.704,
        -0.025
      ],
      "point1": [
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        5.227,
        27.399
      ],
      "point2": [
        18.394,
        8.736,
        27.275
      ],
      "num_chars": 160,
      "suite": "A1aG1aU!!A2[C2aC1aC1aU1aC!!C!!A!!A!!G6pC2hC1aC1aU!!A1aC1aA1aG1aG1aU1aU1cG!!G1aA1bA4pG!!A!!G1aG1aG1aG1aG1aC1bU!!A1bU4aC1aA!!G1bU!!C1aC1aU1eG1aU1aA1aG1cG1aC1aA1cG"
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  },
  "num_nts": 109,
  "nts": [
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      "index": 1,
      "index_chain": 1,
      "chain_name": "A",
      "nt_resnum": 1,
      "nt_name": "A",
      "nt_code": "A",
      "nt_id": "///A/1",
      "linked_nts": [
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        "///A/2"
      ],
      "nt_type": "RNA",
      "dbn": ".",
      "summary": "anti,~C3'-endo,non-pair-contact,ss-non-loop",
      "alpha": null,
      "beta": null,
      "gamma": 170.262,
      "delta": 83.748,
      "epsilon": -113.278,
      "zeta": -79.668,
      "epsilon_zeta": -33.610,
      "bb_type": "--",
      "chi": 178.405,
      "glyco_bond": "anti",
      "C5prime_xyz": [
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        8.419,
        1.737
      ],
      "P_xyz": [
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        null,
        null
      ],
      "form": ".",
      "ssZp": 4.521,
      "Dp": 4.579,
      "splay_angle": 23.643,
      "splay_distance": 3.724,
      "splay_ratio": 0.205,
      "d22": null,
      "d64": null,
      "eta": null,
      "theta": null,
      "eta_prime": null,
      "theta_prime": null,
      "eta_base": null,
      "theta_base": null,
      "v0": -0.786,
      "v1": -20.120,
      "v2": 32.103,
      "v3": -33.459,
      "v4": 21.613,
      "amplitude": 34.139,
      "phase_angle": 19.886,
      "puckering": "C3'-endo",
      "sugar_class": "~C3'-endo",
      "bin": "inc",
      "cluster": "__",
      "suiteness": 0.000,
      "filter_rmsd": 0.037,
      "frame": {
        "rmsd": 0.005,
        "origin": [
          27.369,
          -7.809,
          37.802
        ],
        "x_axis": [
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          0.398,
          0.517
        ],
        "y_axis": [
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          -0.631,
          -0.445
        ],
        "z_axis": [
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          0.666,
          -0.731
        ],
        "quaternion": [
          -0.315,
          0.883,
          0.292,
          0.189
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    },
    {
      "index": 2,
      "index_chain": 2,
      "chain_name": "A",
      "nt_resnum": 2,
      "nt_name": "A",
      "nt_code": "A",
      "nt_id": "///A/2",
      "linked_nts": [
        "///A/1",
        "///A/3"
      ],
      "nt_type": "RNA",
      "dbn": "[",
      "summary": "pseudoknotted,anti,~C3'-endo,BI,canonical,non-pair-contact,helix-end,stem-end,coaxial-stack,phosphate",
      "alpha": -67.927,
      "beta": 145.974,
      "gamma": 61.521,
      "delta": 78.969,
      "epsilon": -145.290,
      "zeta": -73.009,
      "epsilon_zeta": -72.281,
      "bb_type": "BI",
      "chi": -168.592,
      "glyco_bond": "anti",
      "C5prime_xyz": [
        -1.571,
        8.645,
        0.993
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      "P_xyz": [
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        9.042,
        0.507
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      "form": "A",
      "ssZp": 4.617,
      "Dp": 4.683,
      "splay_angle": 26.122,
      "splay_distance": 4.032,
      "splay_ratio": 0.227,
      "d22": null,
      "d64": null,
      "eta": 145.691,
      "theta": -140.397,
      "eta_prime": 172.262,
      "theta_prime": -142.567,
      "eta_base": -109.881,
      "theta_base": -108.900,
      "v0": 1.630,
      "v1": -24.716,
      "v2": 37.136,
      "v3": -37.204,
      "v4": 22.430,
      "amplitude": 38.679,
      "phase_angle": 16.238,
      "puckering": "C3'-endo",
      "sugar_class": "~C3'-endo",
      "bin": "33p",
      "cluster": "1L",
      "suiteness": 0.801,
      "filter_rmsd": 0.035,
      "frame": {
        "rmsd": 0.006,
        "origin": [
          29.764,
          -5.185,
          36.684
        ],
        "x_axis": [
          0.969,
          -0.249,
          -0.005
        ],
        "y_axis": [
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          -0.620,
          -0.767
        ],
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          0.744,
          -0.641
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        "quaternion": [
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          0.899,
          -0.115,
          0.051
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      "index": 3,
      "index_chain": 3,
      "chain_name": "A",
      "nt_resnum": 3,
      "nt_name": "G",
      "nt_code": "G",
      "nt_id": "///A/3",
      "linked_nts": [
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        "///A/4"
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      "nt_type": "RNA",
      "dbn": "[",
      "summary": "pseudoknotted,anti,~C3'-endo,BI,canonical,non-pair-contact,helix,stem,coaxial-stack,phosphate",
      "alpha": -67.244,
      "beta": 165.821,
      "gamma": 65.417,
      "delta": 83.029,
      "epsilon": -154.060,
      "zeta": -65.430,
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      "bb_type": "BI",
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      "glyco_bond": "anti",
      "C5prime_xyz": [
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        8.641,
        1.059
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      "P_xyz": [
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        8.950,
        1.005
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      "form": "A",
      "ssZp": 4.558,
      "Dp": 4.592,
      "splay_angle": 21.714,
      "splay_distance": 3.371,
      "splay_ratio": 0.190,
      "d22": null,
      "d64": null,
      "eta": 168.982,
      "theta": -138.729,
      "eta_prime": -172.386,
      "theta_prime": -139.958,
      "eta_base": -117.406,
      "theta_base": -105.271,
      "v0": 2.889,
      "v1": -24.215,
      "v2": 35.094,
      "v3": -34.411,
      "v4": 19.906,
      "amplitude": 36.191,
      "phase_angle": 14.141,
      "puckering": "C3'-endo",
      "sugar_class": "~C3'-endo",
      "bin": "33p",
      "cluster": "1a",
      "suiteness": 0.731,
      "filter_rmsd": 0.005,
      "frame": {
        "rmsd": 0.005,
        "origin": [
          32.438,
          -2.575,
          35.171
        ],
        "x_axis": [
          0.609,
          -0.626,
          -0.487
        ],
        "y_axis": [
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          -0.279,
          -0.589
        ],
        "z_axis": [
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          0.728,
          -0.645
        ],
        "quaternion": [
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          0.796,
          -0.435,
          -0.080
        ]
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    },
    {
      "index": 4,
      "index_chain": 4,
      "chain_name": "A",
      "nt_resnum": 4,
      "nt_name": "U",
      "nt_code": "U",
      "nt_id": "///A/4",
      "linked_nts": [
        "///A/3",
        "///A/5"
      ],
      "nt_type": "RNA",
      "dbn": "[",
      "summary": "pseudoknotted,anti,~C3'-endo,canonical,non-pair-contact,helix,stem-end,coaxial-stack,bulge,splayed-apart",
      "alpha": -76.143,
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      "atom1_serNum": 2058,
      "atom2_serNum": 2425,
      "donAcc_type": "standard",
      "distance": 2.998,
      "atom1_id": "///B/43/OP2",
      "atom2_id": "///A/113/N5",
      "atom_pair": "O:N",
      "residue_pair": "nt:ligand"
    },
    {
      "index": 296,
      "atom1_serNum": 2089,
      "atom2_serNum": 2476,
      "donAcc_type": "acceptable",
      "distance": 3.034,
      "atom1_id": "///B/44/O2'",
      "atom2_id": "///B/107/N6",
      "atom_pair": "O:N",
      "residue_pair": "nt:ligand"
    },
    {
      "index": 297,
      "atom1_serNum": 2093,
      "atom2_serNum": 2471,
      "donAcc_type": "standard",
      "distance": 3.000,
      "atom1_id": "///B/44/O2",
      "atom2_id": "///B/107/N1",
      "atom_pair": "O:N",
      "residue_pair": "nt:ligand"
    },
    {
      "index": 298,
      "atom1_serNum": 2101,
      "atom2_serNum": 2474,
      "donAcc_type": "standard",
      "distance": 2.611,
      "atom1_id": "///B/45/OP2",
      "atom2_id": "///B/107/N4",
      "atom_pair": "O:N",
      "residue_pair": "nt:ligand"
    },
    {
      "index": 299,
      "atom1_serNum": 2107,
      "atom2_serNum": 2411,
      "donAcc_type": "standard",
      "distance": 2.813,
      "atom1_id": "///B/45/O3'",
      "atom2_id": "///A/111/N5",
      "atom_pair": "O:N",
      "residue_pair": "nt:ligand"
    },
    {
      "index": 300,
      "atom1_serNum": 2120,
      "atom2_serNum": 2410,
      "donAcc_type": "standard",
      "distance": 2.762,
      "atom1_id": "///B/46/OP1",
      "atom2_id": "///A/111/N4",
      "atom_pair": "O:N",
      "residue_pair": "nt:ligand"
    },
    {
      "index": 301,
      "atom1_serNum": 2120,
      "atom2_serNum": 2411,
      "donAcc_type": "standard",
      "distance": 3.233,
      "atom1_id": "///B/46/OP1",
      "atom2_id": "///A/111/N5",
      "atom_pair": "O:N",
      "residue_pair": "nt:ligand"
    },
    {
      "index": 302,
      "atom1_serNum": 2173,
      "atom2_serNum": 2450,
      "donAcc_type": "standard",
      "distance": 3.049,
      "atom1_id": "///B/48/N7",
      "atom2_id": "///B/104/N1",
      "atom_pair": "N:N",
      "residue_pair": "nt:ligand"
    },
    {
      "index": 303,
      "atom1_serNum": 2176,
      "atom2_serNum": 2450,
      "donAcc_type": "standard",
      "distance": 3.084,
      "atom1_id": "///B/48/O6",
      "atom2_id": "///B/104/N1",
      "atom_pair": "O:N",
      "residue_pair": "nt:ligand"
    },
    {
      "index": 304,
      "atom1_serNum": 2199,
      "atom2_serNum": 2453,
      "donAcc_type": "standard",
      "distance": 2.744,
      "atom1_id": "///B/49/O4",
      "atom2_id": "///B/104/N4",
      "atom_pair": "O:N",
      "residue_pair": "nt:ligand"
    },
    {
      "index": 305,
      "atom1_serNum": 2238,
      "atom2_serNum": 2478,
      "donAcc_type": "standard",
      "distance": 2.975,
      "atom1_id": "///B/51/N7",
      "atom2_id": "///B/108/N1",
      "atom_pair": "N:N",
      "residue_pair": "nt:ligand"
    },
    {
      "index": 306,
      "atom1_serNum": 2241,
      "atom2_serNum": 2479,
      "donAcc_type": "standard",
      "distance": 3.205,
      "atom1_id": "///B/51/O6",
      "atom2_id": "///B/108/N2",
      "atom_pair": "O:N",
      "residue_pair": "nt:ligand"
    },
    {
      "index": 307,
      "atom1_serNum": 2261,
      "atom2_serNum": 2482,
      "donAcc_type": "standard",
      "distance": 2.954,
      "atom1_id": "///B/52/N7",
      "atom2_id": "///B/108/N5",
      "atom_pair": "N:N",
      "residue_pair": "nt:ligand"
    },
    {
      "index": 308,
      "atom1_serNum": 2264,
      "atom2_serNum": 2479,
      "donAcc_type": "standard",
      "distance": 3.231,
      "atom1_id": "///B/52/O6",
      "atom2_id": "///B/108/N2",
      "atom_pair": "O:N",
      "residue_pair": "nt:ligand"
    },
    {
      "index": 309,
      "atom1_serNum": 2264,
      "atom2_serNum": 2482,
      "donAcc_type": "standard",
      "distance": 3.335,
      "atom1_id": "///B/52/O6",
      "atom2_id": "///B/108/N5",
      "atom_pair": "O:N",
      "residue_pair": "nt:ligand"
    },
    {
      "index": 310,
      "atom1_serNum": 2340,
      "atom2_serNum": 2397,
      "donAcc_type": "questionable",
      "distance": 2.926,
      "atom1_id": "///A/101/N4",
      "atom2_id": "///A/109/N5",
      "atom_pair": "N:N",
      "residue_pair": "ligand:ligand"
    }
  ],
  "refCoords": {
    "purine": [
      "   12 ATOMS,    12 BONDS",
      "    1 N      -2.2500   5.0000   0.4000",
      "    2 N      -2.2500  -0.5000   0.4000",
      "    3 N      -2.2500  -0.5000  -0.4000",
      "    4 N      -2.2500   5.0000  -0.4000",
      "    5 C       1.2500   5.0000   0.4000",
      "    6 C       1.2500  -0.5000   0.4000",
      "    7 C       1.2500  -0.5000  -0.4000",
      "    8 C       1.2500   5.0000  -0.4000",
      "    9 C      -2.2500   5.0000   0.4000",
      "   10 C      -2.2500  -0.5000   0.4000",
      "   11 C      -2.2500  -0.5000  -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"
    ],
    "pyrimidine": [
      "   12 ATOMS,    12 BONDS",
      "    1 N      -2.2500   5.0000   0.4000",
      "    2 N      -2.2500   1.0000   0.4000",
      "    3 N      -2.2500   1.0000  -0.4000",
      "    4 N      -2.2500   5.0000  -0.4000",
      "    5 C       1.2500   5.0000   0.4000",
      "    6 C       1.2500   1.0000   0.4000",
      "    7 C       1.2500   1.0000  -0.4000",
      "    8 C       1.2500   5.0000  -0.4000",
      "    9 C      -2.2500   5.0000   0.4000",
      "   10 C      -2.2500   1.0000   0.4000",
      "   11 C      -2.2500   1.0000  -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"
    ],
    "wc_pair": [
      "   12 ATOMS,    12 BONDS",
      "    1 N      -2.2500   5.0000   0.4000",
      "    2 N      -2.2500  -5.0000   0.4000",
      "    3 N      -2.2500  -5.0000  -0.4000",
      "    4 N      -2.2500   5.0000  -0.4000",
      "    5 C       2.2500   5.0000   0.4000",
      "    6 C       2.2500  -5.0000   0.4000",
      "    7 C       2.2500  -5.0000  -0.4000",
      "    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": "9cfn",
    "num_naChains": 2,
    "naChains": "A=55,B=54",
    "num_atoms": 2503,
    "num_waters": 0,
    "num_metals": 26,
    "metals_desc": "Mg=2,Ir=24",
    "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": 18,
    "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-bulges.pdb",
        "desc": "an ensemble of bulges"
      },
      {
        "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-stacks.pdb",
        "desc": "an ensemble of base stacks"
      },
      {
        "index": 14,
        "name": "dssr-atom2bases.pdb",
        "desc": "an ensemble of atom-base stacking interactions"
      },
      {
        "index": 15,
        "name": "dssr-rotmat.txt",
        "desc": "position vector and rotation matrix"
      },
      {
        "index": 16,
        "name": "dssr-viewV.pdb",
        "desc": "vertical view of the principal moment of inertia"
      },
      {
        "index": 17,
        "name": "dssr-viewH.pdb",
        "desc": "horizontal view of the principal moment of inertia"
      },
      {
        "index": 18,
        "name": "dssr-viewT.pdb",
        "desc": "top view of the principal moment of inertia"
      }
    ],
    "time_used": "999"
  }
}
