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      "atom1_serNum": 5866,
      "atom2_serNum": 5952,
      "donAcc_type": "standard",
      "distance": 2.925,
      "atom1_id": "///A/334/N",
      "atom2_id": "///A/345/O",
      "atom_pair": "N:O",
      "residue_pair": "aa:aa"
    },
    {
      "index": 751,
      "atom1_serNum": 5869,
      "atom2_serNum": 5949,
      "donAcc_type": "standard",
      "distance": 3.098,
      "atom1_id": "///A/334/O",
      "atom2_id": "///A/345/N",
      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
    },
    {
      "index": 752,
      "atom1_serNum": 5885,
      "atom2_serNum": 5934,
      "donAcc_type": "standard",
      "distance": 2.882,
      "atom1_id": "///A/336/N",
      "atom2_id": "///A/343/O",
      "atom_pair": "N:O",
      "residue_pair": "aa:aa"
    },
    {
      "index": 753,
      "atom1_serNum": 5888,
      "atom2_serNum": 5931,
      "donAcc_type": "standard",
      "distance": 2.693,
      "atom1_id": "///A/336/O",
      "atom2_id": "///A/343/N",
      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
    },
    {
      "index": 754,
      "atom1_serNum": 5897,
      "atom2_serNum": 5921,
      "donAcc_type": "standard",
      "distance": 2.841,
      "atom1_id": "///A/338/N",
      "atom2_id": "///A/341/O",
      "atom_pair": "N:O",
      "residue_pair": "aa:aa"
    },
    {
      "index": 755,
      "atom1_serNum": 5900,
      "atom2_serNum": 5918,
      "donAcc_type": "standard",
      "distance": 3.017,
      "atom1_id": "///A/338/O",
      "atom2_id": "///A/341/N",
      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
    },
    {
      "index": 756,
      "atom1_serNum": 5902,
      "atom2_serNum": 5937,
      "donAcc_type": "acceptable",
      "distance": 3.665,
      "atom1_id": "///A/338/OG",
      "atom2_id": "///A/343/ND1",
      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
    },
    {
      "index": 757,
      "atom1_serNum": 5990,
      "atom2_serNum": 6020,
      "donAcc_type": "standard",
      "distance": 3.128,
      "atom1_id": "///A/349/O",
      "atom2_id": "///A/353/N",
      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
    },
    {
      "index": 758,
      "atom1_serNum": 5993,
      "atom2_serNum": 6004,
      "donAcc_type": "standard",
      "distance": 3.555,
      "atom1_id": "///A/349/OD1",
      "atom2_id": "///A/351/N",
      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
    },
    {
      "index": 759,
      "atom1_serNum": 5995,
      "atom2_serNum": 6002,
      "donAcc_type": "standard",
      "distance": 2.751,
      "atom1_id": "///A/350/N",
      "atom2_id": "///A/350/OE1",
      "atom_pair": "N:O",
      "residue_pair": "aa:aa"
    },
    {
      "index": 760,
      "atom1_serNum": 5998,
      "atom2_serNum": 6025,
      "donAcc_type": "standard",
      "distance": 2.770,
      "atom1_id": "///A/350/O",
      "atom2_id": "///A/354/N",
      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
    },
    {
      "index": 761,
      "atom1_serNum": 6007,
      "atom2_serNum": 6033,
      "donAcc_type": "standard",
      "distance": 2.914,
      "atom1_id": "///A/351/O",
      "atom2_id": "///A/355/N",
      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
    },
    {
      "index": 762,
      "atom1_serNum": 6023,
      "atom2_serNum": 6114,
      "donAcc_type": "standard",
      "distance": 3.100,
      "atom1_id": "///A/353/O",
      "atom2_id": "///A/364/NH1",
      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
    },
    {
      "index": 763,
      "atom1_serNum": 6023,
      "atom2_serNum": 6115,
      "donAcc_type": "standard",
      "distance": 2.660,
      "atom1_id": "///A/353/O",
      "atom2_id": "///A/364/NH2",
      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
    },
    {
      "index": 764,
      "atom1_serNum": 6036,
      "atom2_serNum": 6115,
      "donAcc_type": "standard",
      "distance": 3.216,
      "atom1_id": "///A/355/O",
      "atom2_id": "///A/364/NH2",
      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
    },
    {
      "index": 765,
      "atom1_serNum": 6043,
      "atom2_serNum": 6076,
      "donAcc_type": "standard",
      "distance": 3.309,
      "atom1_id": "///A/356/OD1",
      "atom2_id": "///A/361/N",
      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
    },
    {
      "index": 766,
      "atom1_serNum": 6064,
      "atom2_serNum": 6112,
      "donAcc_type": "standard",
      "distance": 2.920,
      "atom1_id": "///A/359/O",
      "atom2_id": "///A/364/NE",
      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
    },
    {
      "index": 767,
      "atom1_serNum": 6064,
      "atom2_serNum": 6115,
      "donAcc_type": "standard",
      "distance": 3.091,
      "atom1_id": "///A/359/O",
      "atom2_id": "///A/364/NH2",
      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
    },
    {
      "index": 768,
      "atom1_serNum": 6072,
      "atom2_serNum": 6094,
      "donAcc_type": "standard",
      "distance": 2.794,
      "atom1_id": "///A/360/O",
      "atom2_id": "///A/363/N",
      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
    },
    {
      "index": 769,
      "atom1_serNum": 6072,
      "atom2_serNum": 6105,
      "donAcc_type": "standard",
      "distance": 3.118,
      "atom1_id": "///A/360/O",
      "atom2_id": "///A/364/N",
      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
    },
    {
      "index": 770,
      "atom1_serNum": 6079,
      "atom2_serNum": 6116,
      "donAcc_type": "standard",
      "distance": 2.760,
      "atom1_id": "///A/361/O",
      "atom2_id": "///A/365/N",
      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
    },
    {
      "index": 771,
      "atom1_serNum": 6083,
      "atom2_serNum": 6125,
      "donAcc_type": "standard",
      "distance": 3.067,
      "atom1_id": "///A/362/O",
      "atom2_id": "///A/366/N",
      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
    },
    {
      "index": 772,
      "atom1_serNum": 6097,
      "atom2_serNum": 6139,
      "donAcc_type": "standard",
      "distance": 3.048,
      "atom1_id": "///A/363/O",
      "atom2_id": "///A/367/N",
      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
    },
    {
      "index": 773,
      "atom1_serNum": 6108,
      "atom2_serNum": 6150,
      "donAcc_type": "standard",
      "distance": 3.064,
      "atom1_id": "///A/364/O",
      "atom2_id": "///A/368/N",
      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
    },
    {
      "index": 774,
      "atom1_serNum": 6119,
      "atom2_serNum": 6161,
      "donAcc_type": "standard",
      "distance": 3.134,
      "atom1_id": "///A/365/O",
      "atom2_id": "///A/369/N",
      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
    },
    {
      "index": 775,
      "atom1_serNum": 6128,
      "atom2_serNum": 6167,
      "donAcc_type": "standard",
      "distance": 3.311,
      "atom1_id": "///A/366/O",
      "atom2_id": "///A/370/N",
      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
    },
    {
      "index": 776,
      "atom1_serNum": 6153,
      "atom2_serNum": 6175,
      "donAcc_type": "standard",
      "distance": 3.038,
      "atom1_id": "///A/368/O",
      "atom2_id": "///A/371/N",
      "atom_pair": "O:N",
      "residue_pair": "aa:aa"
    },
    {
      "index": 777,
      "atom1_serNum": 6153,
      "atom2_serNum": 6180,
      "donAcc_type": "acceptable",
      "distance": 3.139,
      "atom1_id": "///A/368/O",
      "atom2_id": "///A/371/OG",
      "atom_pair": "O: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": "5bte",
    "num_aaChains": 2,
    "aaChains": "A=365,B=368",
    "num_naChains": 2,
    "naChains": "C=6,D=6",
    "num_atoms": 6550,
    "num_waters": 357,
    "num_metals": 6,
    "metals_desc": "Mn=6",
    "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": 11,
    "auxfiles": [
      {
        "index": 1,
        "name": "dssr-2ndstrs.bpseq",
        "desc": "secondary structure in bpseq format"
      },
      {
        "index": 2,
        "name": "dssr-2ndstrs.ct",
        "desc": "secondary structure in connectivity table format"
      },
      {
        "index": 3,
        "name": "dssr-2ndstrs.dbn",
        "desc": "secondary structure in dot-bracket notation"
      },
      {
        "index": 4,
        "name": "dssr-torsions.txt",
        "desc": "backbone torsion angles and suite names"
      },
      {
        "index": 5,
        "name": "dssr-splays.pdb",
        "desc": "an ensemble of splayed-apart units"
      },
      {
        "index": 6,
        "name": "dssr-stacks.pdb",
        "desc": "an ensemble of base stacks"
      },
      {
        "index": 7,
        "name": "dssr-atom2bases.pdb",
        "desc": "an ensemble of atom-base stacking interactions"
      },
      {
        "index": 8,
        "name": "dssr-rotmat.txt",
        "desc": "position vector and rotation matrix"
      },
      {
        "index": 9,
        "name": "dssr-viewV.pdb",
        "desc": "vertical view of the principal moment of inertia"
      },
      {
        "index": 10,
        "name": "dssr-viewH.pdb",
        "desc": "horizontal view of the principal moment of inertia"
      },
      {
        "index": 11,
        "name": "dssr-viewT.pdb",
        "desc": "top view of the principal moment of inertia"
      }
    ],
    "time_used": "999"
  }
}
