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File name: 6n6h.pdb
    no. of DNA/RNA chains: 1 [D=2]
    no. of nucleotides:    2
    no. of atoms:          1720
    no. of waters:         209
    no. of metals:         1 [Na=1]

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List of 1 base stack
  Note: A stack is an ordered list of nucleotides assembled together via
        base-stacking interactions, regardless of backbone connectivity.
        Stacking interactions within a stem are *not* included.
   1 nts=3 WUC A.TRP61,D.U604,D.C603

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List of 1 non-loop single-stranded segment
   1 nts=2 CU D.C603,D.U604

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Secondary structures in dot-bracket notation (dbn) as a whole and per chain
>6n6h nts=2 [whole]
CU
..
>6n6h-D #1 nts=2 [chain] RNA
CU
..

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Summary of structural features of 2 nucleotides
  Note: the first five columns are: (1) serial number, (2) one-letter
    shorthand name, (3) dbn, (4) id string, (5) rmsd (~zero) of base
    ring atoms fitted against those in a standard base reference
    frame. The sixth (last) column contains a comma-separated list of
    features whose meanings are mostly self-explanatory, except for:
      turn: angle C1'(i-1)--C1'(i)--C1'(i+1) < 90 degrees
      break: no backbone linkage between O3'(i-1) and P(i)
   1  C . D.C603   0.006  anti,~C3'-endo,BI,non-pair-contact,ss-non-loop,phosphate
   2  U . D.U604   0.005  anti,~C3'-endo,non-pair-contact,ss-non-loop,phosphate

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List of 9 additional files
   1 dssr-2ndstrs.bpseq -- secondary structure in bpseq format
   2 dssr-2ndstrs.ct -- secondary structure in connectivity table format
   3 dssr-2ndstrs.dbn -- secondary structure in dot-bracket notation
   4 dssr-torsions.txt -- backbone torsion angles and suite names
   5 dssr-stacks.pdb -- an ensemble of base stacks
   6 dssr-rotmat.txt -- position vector and rotation matrix
   7 dssr-viewV.pdb -- vertical view of the principal moment of inertia
   8 dssr-viewH.pdb -- horizontal view of the principal moment of inertia
   9 dssr-viewT.pdb -- top view of the principal moment of inertia