wat_density.in

explicit solvent density: 50ps
 &cntrl
  imin=0,
  irest=1,
  ntx=5,
  nstlim=25000, dt=0.002,
  ntc=2, ntf=2,
  cut=8.0, ntb=2, ntp=1, taup=1.0,
  ntpr=500, ntwx=500,
  ntt=3, gamma_ln=2.0,
  temp0=300.0, ig=-1,
  ntr=1,
  restraintmask=':1-475@CA,C,O,N',
  restraint_wt=20.0,
  iwrap=1
  /

# imin : Flag to run minimization. 0, Run MD without any minimization 1, Perform an energy minimization, 5, Read in a trajectory for analysis
# irest: Flag to restart a simulation. 0, (default) Do not restart the simulation, run as a new simulation 1, restart the simulation, reading coordinates and velocities from a previously saved restart file. if irest=1, ntx must be 4 or higher
# ntx  : Option to read the initial coordinates, velocities and box size from the inpcrd file. 1, (default) Coordinates, but no velocities 5, Coordinates and velocities
# nstlim and dt: time step: 0.002 (2fs), nstlim: number of MD-steps to be performed
# ntc  : Flag for SHAKE to perform bond length constraints. 1, SHAKE is not performed (default) 2, bonds involving hydrogen are constrained 3, all bons are constrained
# ntf  : Force evaluation. 1, complete interaction is calculated (default) 2, bond interactions involving H-atoms omitted (use with ntc=2) ...
# cut  : nonbonded cutoff, in Angstroms
# ntb  : Periodic boundaries: 0, no periodicity 1, constant volume 2, constant pressure (default when ntp>0)
# ntp  : Flag for constant presure dynamics. This option should be set to 1 or 2 when Constant Pressure periodic boundary
 conditions are used. 0, no pressure scaling(Default) 1, MD with isotropic position scaling 2, with anisotropic pressure scaling 3, with semiisotropic pressure scaling
# taup : Pressure relaxation time (in ps). The recommended value is between 1.0 (default) and 5.0 psec
# ntpr : Every ntpr steps, energy inforfation will be printed in human-readable form to files 'mdout' 'mdinfo', Default 50
# ntwx : Every ntwx steps, the velocities will be written to the mdvel file, default = 0, no velocity trajectory file will be written
# ntt  : Switch for temperature scaling. 3, Langevin dynamics with the collision frequency ¦Ã given by gamma_ln
# tempi: Initial temperature temp0: reference temperature at which the system is to be kept
# ig   : The seed for the pseudo-random number generator, ig = -1 recommend for all runs involving ntt = 2 or 3
# ntr  : ntr>0 restrain specified atoms: restraintmask & restraint_wt Default = 0
# iwrap: If iwrap=1, the coordinates written to the restart and trajectory files will be 'wrapped' into a primary box. 0, no wrapping will be performed (default)
# ntwr : Every ntwr steps during dynamics, the 'restrt' file will be written