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      "helical_radius": 9.250,
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        {
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          "heli_params": [
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        {
          "index": 3,
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          "bp": "C-G",
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          "Saenger": "19-XIX",
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          "step_params": [
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            23.588
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          "heli_params": [
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          "bp2_params": [
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          "groove_widths": [
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          "simple_Rise": 3.067,
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        {
          "index": 4,
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          "bp": "G-C",
          "name": "WC",
          "Saenger": "19-XIX",
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          "DSSR": "cW-W",
          "bp1_params": [
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          "step_params": [
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          "heli_params": [
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          "bp2_params": [
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          "groove_widths": [
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          "simple_Rise": 3.766,
          "simple_Twist": 36.089,
          "simple_hRise": 3.273,
          "simple_hTwist": 37.061
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        {
          "index": 5,
          "nt1": "///R/53",
          "nt2": "///R/61",
          "bp": "G-C",
          "name": "WC",
          "Saenger": "19-XIX",
          "LW": "cWW",
          "DSSR": "cW-W"
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      ]
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  "num_isoCanonPairs": 1,
  "isoCanonPairs": [
    {
      "index": -1,
      "helix_index": 1,
      "nt1": "///R/19",
      "nt2": "///R/56",
      "bp": "G-C",
      "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,
        4
      ]
    },
    {
      "index": 2,
      "helix_index": 2,
      "num_stems": 2,
      "stem_indices": [
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        2
      ]
    }
  ],
  "num_stacks": 13,
  "stacks": [
    {
      "index": 1,
      "num_nts": 2,
      "nts_short": "UU",
      "nts_long": "///R/7,///R/49"
    },
    {
      "index": 2,
      "num_nts": 2,
      "nts_short": "UC",
      "nts_long": "///R/43,///R/44"
    },
    {
      "index": 3,
      "num_nts": 2,
      "nts_short": "AA",
      "nts_long": "///R/65,///R/66"
    },
    {
      "index": 4,
      "num_nts": 2,
      "nts_short": "AE",
      "nts_long": "///R/76,///P/271"
    },
    {
      "index": 5,
      "num_nts": 3,
      "nts_short": "uAA",
      "nts_long": "///R/8,///R/13,///R/12"
    },
    {
      "index": 6,
      "num_nts": 3,
      "nts_short": "UAG",
      "nts_long": "///R/25,///R/26,///R/27"
    },
    {
      "index": 7,
      "num_nts": 3,
      "nts_short": "GtP",
      "nts_long": "///R/53,///R/54,///R/55"
    },
    {
      "index": 8,
      "num_nts": 3,
      "nts_short": "CUC",
      "nts_long": "///R/72,///R/73,///R/74"
    },
    {
      "index": 9,
      "num_nts": 4,
      "nts_short": "GAPU",
      "nts_long": "///R/30,///R/31,///R/32,///R/33"
    },
    {
      "index": 10,
      "num_nts": 5,
      "nts_short": "AAGCU",
      "nts_long": "///R/9,///R/46,///R/48,///R/59,///R/60"
    },
    {
      "index": 11,
      "num_nts": 5,
      "nts_short": "CGAAU",
      "nts_long": "///R/16,///R/15,///R/14,///R/22,///R/23"
    },
    {
      "index": 12,
      "num_nts": 5,
      "nts_short": "GGGAC",
      "nts_long": "///R/19,///R/57,///R/18,///R/58,///R/61"
    },
    {
      "index": 13,
      "num_nts": 7,
      "nts_short": "GCAaAPC",
      "nts_long": "///R/34,///R/35,///R/36,///R/37,///R/38,///R/39,///R/40"
    }
  ],
  "nonStack": {
    "num_nts": 6,
    "nts_short": "uuCUCg",
    "nts_long": "///R/20,///R/21,///R/41,///R/45,///R/75,///P/406"
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  "num_atom2bases": 3,
  "atom2bases": [
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      "index": 1,
      "type": "sugar",
      "atom": "///R/39/O4'",
      "nt": "///R/38",
      "vert_dist": 3.249
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    {
      "index": 2,
      "type": "sugar",
      "atom": "///R/59/O4'",
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      "vert_dist": 3.127
    },
    {
      "index": 3,
      "type": "phosphate",
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      "type": "hairpin loop",
      "bridging_nts": [
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      "stem_indices": [
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      "summary": "[1] 9 [R.12 R.23] 3",
      "num_nts": 11,
      "nts_short": "AAAGCGGuuAU",
      "nts_long": "///R/12,///R/13,///R/14,///R/15,///R/16,///R/18,///R/19,///R/20,///R/21,///R/22,///R/23",
      "num_stems": 1,
      "bridges": [
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          "index": 1,
          "num_nts": 9,
          "nts_short": "AAGCGGuuA",
          "nts_long": "///R/13,///R/14,///R/15,///R/16,///R/18,///R/19,///R/20,///R/21,///R/22"
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      ]
    },
    {
      "index": 2,
      "type": "hairpin loop",
      "bridging_nts": [
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      "stem_indices": [
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      "summary": "[1] 9 [R.30 R.40] 4",
      "num_nts": 11,
      "nts_short": "GAPUGCAaAPC",
      "nts_long": "///R/30,///R/31,///R/32,///R/33,///R/34,///R/35,///R/36,///R/37,///R/38,///R/39,///R/40",
      "num_stems": 1,
      "bridges": [
        {
          "index": 1,
          "num_nts": 9,
          "nts_short": "APUGCAaAP",
          "nts_long": "///R/31,///R/32,///R/33,///R/34,///R/35,///R/36,///R/37,///R/38,///R/39"
        }
      ]
    },
    {
      "index": 3,
      "type": "hairpin loop",
      "bridging_nts": [
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      ],
      "stem_indices": [
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      ],
      "summary": "[1] 7 [R.53 R.61] 5",
      "num_nts": 9,
      "nts_short": "GtPCGACUC",
      "nts_long": "///R/53,///R/54,///R/55,///R/56,///R/57,///R/58,///R/59,///R/60,///R/61",
      "num_stems": 1,
      "bridges": [
        {
          "index": 1,
          "num_nts": 7,
          "nts_short": "tPCGACU",
          "nts_long": "///R/54,///R/55,///R/56,///R/57,///R/58,///R/59,///R/60"
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      ]
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  "num_junctions": 1,
  "junctions": [
    {
      "index": 1,
      "type": "4-way junction",
      "bridging_nts": [
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        1,
        4,
        0
      ],
      "stem_indices": [
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        2,
        3,
        4
      ],
      "summary": "[4] 2 1 4 0 [R.7 R.66 R.10 R.25 R.27 R.43 R.49 R.65] 7 3 4 5",
      "num_nts": 15,
      "nts_short": "UuAAUAGUCUAGUAA",
      "nts_long": "///R/7,///R/8,///R/9,///R/10,///R/25,///R/26,///R/27,///R/43,///R/44,///R/45,///R/46,///R/48,///R/49,///R/65,///R/66",
      "num_stems": 4,
      "bridges": [
        {
          "index": 1,
          "num_nts": 2,
          "nts_short": "uA",
          "nts_long": "///R/8,///R/9"
        },
        {
          "index": 2,
          "num_nts": 1,
          "nts_short": "A",
          "nts_long": "///R/26"
        },
        {
          "index": 3,
          "num_nts": 4,
          "nts_short": "CUAG",
          "nts_long": "///R/44,///R/45,///R/46,///R/48"
        },
        {
          "index": 4,
          "num_nts": 0,
          "nts_short": "",
          "nts_long": ""
        }
      ]
    }
  ],
  "num_ssSegments": 2,
  "ssSegments": [
    {
      "index": 1,
      "num_nts": 4,
      "nts_short": "UCCA",
      "nts_long": "///R/73,///R/74,///R/75,///R/76"
    },
    {
      "index": 2,
      "num_nts": 1,
      "nts_short": "g",
      "nts_long": "///P/406"
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  ],
  "num_kissingLoops": 1,
  "kissingLoops": [
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      "index": 1,
      "stem_index": -1,
      "is_isoCanonPair": true,
      "hairpin_indices": [
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        3
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  "num_splayUnits": 4,
  "splayUnits": [
    {
      "index": 1,
      "num_nts": 2,
      "nts_short": "Uu",
      "nts_long": "///R/7,///R/8"
    },
    {
      "index": 2,
      "num_nts": 2,
      "nts_short": "uA",
      "nts_long": "///R/21,///R/22"
    },
    {
      "index": 3,
      "num_nts": 3,
      "nts_short": "CUA",
      "nts_long": "///R/44,///R/45,///R/46"
    },
    {
      "index": 4,
      "num_nts": 2,
      "nts_short": "GU",
      "nts_long": "///R/48,///R/49"
    }
  ],
  "pseudoknot_order": 1,
  "pseudoknot_nts": [
    {
      "index": 1,
      "symbols": "[]",
      "num_nts": 2,
      "nts_short": "GC",
      "nts_long": "///R/19,///R/56"
    }
  ],
  "dbn": {
    "all_chains": {
      "num_nts": 75,
      "num_chars": 76,
      "bseq": "GGCGCGUuAACAAAGCGGuuAUGUAGCGGAPUGCAaAPCCGUCUAGUCCGGtPCGACUCCGGAACGCGCCUCCA&g",
      "bseqUP": "GGCGCGUUAACAAAGCGGUUAUGUAGCGGAUUGCAAAUCCGUCUAGUCCGGTUCGACUCCGGAACGCGCCUCCA&G",
      "sstr": "(((((((..(((.....[...))).((((.........))))....(((((..]....))))))))))))....&.",
      "form": "AAAAAA...AA..AA........AAAAAA...A....AAAAB..A.A..AA..A....A.AAAAAAAA.....-&-"
    },
    "chain_R": {
      "num_nts": 75,
      "num_chars": 74,
      "bseq": "GGCGCGUuAACAAAGCGGuuAUGUAGCGGAPUGCAaAPCCGUCUAGUCCGGtPCGACUCCGGAACGCGCCUCCA",
      "bseqUP": "GGCGCGUUAACAAAGCGGUUAUGUAGCGGAUUGCAAAUCCGUCUAGUCCGGTUCGACUCCGGAACGCGCCUCCA",
      "sstr": "(((((((..(((.....[...))).((((.........))))....(((((..]....))))))))))))....",
      "form": "AAAAAA...AA..AA........AAAAAA...A....AAAAB..A.A..AA..A....A.AAAAAAAA.....-"
    }
  },
  "chains": {
    "chain_R": {
      "num_nts": 74,
      "bseq": "GGCGCGUuAACAAAGCGGuuAUGUAGCGGAPUGCAaAPCCGUCUAGUCCGGtPCGACUCCGGAACGCGCCUCCA",
      "sstr": "(((((((..(((.....[...))).((((.........))))....(((((..]....))))))))))))....",
      "form": "AAAAAA...AA..AA........AAAAAA...A....AAAAB..A.A..AA..A....A.AAAAAAAA.....-",
      "helical_rise": 0.018,
      "helical_rise_std": 2.993,
      "helical_axis": [
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        -0.453,
        -0.464
      ],
      "point1": [
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        41.089,
        3.088
      ],
      "point2": [
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        null,
        null
      ],
      "num_chars": 220,
      "suite": "G1aG1aC1aG1aC1aG1aU1mu1[A2gA1aC1aA1aA1cA1aG1aC!!G4bG2ou0bu!!A1aU1aG1aU!!A1mG1aC1aG1aG1cA1aP1aU1gG1aC1cA1aa!!A1aP1cC1aC1aG1aU1bC2uU!!A!!G6dU1aC1aC1cG1aG1at1aP1gC1aG1[A4dC1bU2aC1aC!!G1cG1aA1aA1aC1aG1aC1cG1aC1cC1aU1aC!!C!!A"
    }
  },
  "num_nts": 75,
  "nts": [
    {
      "index": 1,
      "index_chain": 1,
      "chain_name": "R",
      "nt_resnum": 1,
      "nt_name": "G",
      "nt_code": "G",
      "nt_id": "///R/1",
      "linked_nts": [
        null,
        "///R/2"
      ],
      "nt_type": "RNA",
      "dbn": "(",
      "summary": "anti,~C3'-endo,BI,canonical,non-pair-contact,helix-end,stem-end,coaxial-stack",
      "alpha": null,
      "beta": -148.170,
      "gamma": 53.871,
      "delta": 85.135,
      "epsilon": -153.530,
      "zeta": -71.194,
      "epsilon_zeta": -82.336,
      "bb_type": "BI",
      "chi": -172.652,
      "glyco_bond": "anti",
      "C5prime_xyz": [
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        8.488,
        1.313
      ],
      "P_xyz": [
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        8.398,
        2.604
      ],
      "form": "A",
      "ssZp": 4.672,
      "Dp": 4.611,
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    {
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      "residue_pair": "aa:aa"
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      "atom1_id": "///P/350/O",
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      "residue_pair": "aa:aa"
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    {
      "index": 543,
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      "atom1_id": "///P/352/N",
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      "atom_pair": "N:O",
      "residue_pair": "aa:aa"
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    {
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      "distance": 2.957,
      "atom1_id": "///P/352/O",
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      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
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    {
      "index": 545,
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      "atom1_id": "///P/354/N",
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      "atom_pair": "N:O",
      "residue_pair": "aa:aa"
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    {
      "index": 546,
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      "donAcc_type": "standard",
      "distance": 3.293,
      "atom1_id": "///P/354/O",
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      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
    },
    {
      "index": 547,
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      "donAcc_type": "acceptable",
      "distance": 3.707,
      "atom1_id": "///P/354/NH1",
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      "atom_pair": "N:O",
      "residue_pair": "aa:ligand"
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    {
      "index": 548,
      "atom1_serNum": 4348,
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      "donAcc_type": "acceptable",
      "distance": 2.924,
      "atom1_id": "///P/354/NH2",
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      "atom_pair": "N:O",
      "residue_pair": "aa:ligand"
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    {
      "index": 549,
      "atom1_serNum": 4360,
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      "donAcc_type": "standard",
      "distance": 3.069,
      "atom1_id": "///P/356/O",
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      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
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      "donAcc_type": "standard",
      "distance": 3.142,
      "atom1_id": "///P/363/O",
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      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
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    {
      "index": 551,
      "atom1_serNum": 4411,
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      "donAcc_type": "questionable",
      "distance": 3.088,
      "atom1_id": "///P/363/O",
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      "atom_pair": "O:O",
      "residue_pair": "aa:aa"
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      "donAcc_type": "standard",
      "distance": 2.941,
      "atom1_id": "///P/378/O",
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      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
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    {
      "index": 553,
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      "donAcc_type": "standard",
      "distance": 3.204,
      "atom1_id": "///P/381/O",
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      "index": 554,
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      "donAcc_type": "standard",
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      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
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    {
      "index": 555,
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      "donAcc_type": "standard",
      "distance": 2.692,
      "atom1_id": "///P/383/N",
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      "distance": 2.890,
      "atom1_id": "///P/384/O",
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      "residue_pair": "aa:aa"
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    {
      "index": 557,
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      "donAcc_type": "standard",
      "distance": 2.946,
      "atom1_id": "///P/386/N",
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      "atom_pair": "N:O",
      "residue_pair": "aa:aa"
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      "index": 558,
      "atom1_serNum": 4587,
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      "donAcc_type": "standard",
      "distance": 3.268,
      "atom1_id": "///P/386/O",
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      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
    },
    {
      "index": 559,
      "atom1_serNum": 4600,
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      "donAcc_type": "standard",
      "distance": 2.790,
      "atom1_id": "///P/388/N",
      "atom2_id": "///P/396/O",
      "atom_pair": "N:O",
      "residue_pair": "aa:aa"
    },
    {
      "index": 560,
      "atom1_serNum": 4603,
      "atom2_serNum": 4654,
      "donAcc_type": "standard",
      "distance": 2.730,
      "atom1_id": "///P/388/O",
      "atom2_id": "///P/395/N",
      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
    },
    {
      "index": 561,
      "atom1_serNum": 4603,
      "atom2_serNum": 4661,
      "donAcc_type": "standard",
      "distance": 3.258,
      "atom1_id": "///P/388/O",
      "atom2_id": "///P/396/N",
      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
    },
    {
      "index": 562,
      "atom1_serNum": 4617,
      "atom2_serNum": 4652,
      "donAcc_type": "acceptable",
      "distance": 2.650,
      "atom1_id": "///P/389/NH1",
      "atom2_id": "///P/394/OG1",
      "atom_pair": "N:O",
      "residue_pair": "aa:aa"
    },
    {
      "index": 563,
      "atom1_serNum": 4619,
      "atom2_serNum": 4639,
      "donAcc_type": "standard",
      "distance": 3.031,
      "atom1_id": "///P/390/N",
      "atom2_id": "///P/393/O",
      "atom_pair": "N:O",
      "residue_pair": "aa:aa"
    }
  ],
  "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": "1b23",
    "num_aaChains": 1,
    "aaChains": "P=406",
    "num_naChains": 1,
    "naChains": "R=75",
    "num_atoms": 5040,
    "num_waters": 261,
    "num_metals": 3,
    "metals_desc": "Mg=3",
    "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": 17,
    "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-junctions.pdb",
        "desc": "an ensemble of junctions (multi-branch)"
      },
      {
        "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-stacks.pdb",
        "desc": "an ensemble of base stacks"
      },
      {
        "index": 13,
        "name": "dssr-atom2bases.pdb",
        "desc": "an ensemble of atom-base stacking interactions"
      },
      {
        "index": 14,
        "name": "dssr-rotmat.txt",
        "desc": "position vector and rotation matrix"
      },
      {
        "index": 15,
        "name": "dssr-viewV.pdb",
        "desc": "vertical view of the principal moment of inertia"
      },
      {
        "index": 16,
        "name": "dssr-viewH.pdb",
        "desc": "horizontal view of the principal moment of inertia"
      },
      {
        "index": 17,
        "name": "dssr-viewT.pdb",
        "desc": "top view of the principal moment of inertia"
      }
    ],
    "time_used": "999"
  }
}