polyA-polyT 10-mer: initial minimisation solvent + ions
 &cntrl
  imin   = 1,
  maxcyc = 10000,
  ncyc   = 5000,
  ntb    = 1,
  ntr    = 1,
  ntpr   =500,
  cut    = 10,
  ipol=1 
/
Hold the DNA fixed
500.0
RES 1 17 
END
END