A-DNA 10-mer: 20ps MD with res on DNA
 &cntrl
  imin   = 0,
  irest  = 0,
  ntx    = 1,
  ntb    = 1,
  cut    = 10,
  ntr    = 1,
  ntc    = 2,
  ntf    = 2,
  tempi  = 0.0,
  temp0  = 300.0,
  ntt    = 3,
  gamma_ln = 1.0,
  nstlim = 10000, dt = 0.002,
  ntpr = 250, ntwx = 250, ntwr = 10000
 /
Keep DNA fixed with weak restraints
10.0
RES 1 20
END
END