# Second run of the Cyt C2: # Reads previous trajectory file and recomputes # electrostatic energy at each frame for the new charges. set outputname cytrun2 #firsttimestep 1 # input structure cyt_deltaQ.psf coordinates SPH_1CXCequi.pdb if {1} { set inputname cyt_red_init bincoordinates $inputname.rst.coor ExtendedSystem $inputname.rst.xsc binvelocities $inputname.rst.vel } paraTypeCharmm on parameters par_all27_prot_lipid_mod.inp #numsteps 200 #minimization off if {0} { temperature 298.0 } #fixedAtoms off # force field parameters # since PME is not allowed with pair interactions # we normally would want a larger cutoff than usual 12.0 exclude scaled1-4 1-4scaling 1.0 cutoff 12.0 switching On switchdist 10.0 pairlistdist 14.0 # integrator params # Since we want to keep track of energies at every frame we want # to do the unsual practice of setting the below frequencies all to 1 # # these parameters are modified to be able to # read the dcd file at each frame # # stepspercycle needs to be a divisor of firstTimeStep timestep 1.0 nonbondedFreq 1 fullElectFrequency 1 stepspercycle 1 # Periodic boundary condition if {0} { cellBasisVector1 53 0 0 cellBasisVector2 0 51 0 cellBasisVector3 0 0 51 cellorigin 0 0 0 } wrapWater on wrapAll on wrapNearest on # Particle Mesh Ewald # No PME for pair interactions #PME yes #PMEGridsizeX 54 #PMEGridsizeY 54 #PMEGridsizeZ 54 # Temperature coupling #langevin on # do langevin dynamics #langevinDamping 10 # damping coefficient (gamma) of 5/ps #langevinTemp 298 # bath temperature #langevinHydrogen no # don't couple langevin bath to hydrogens # Pressure coupling useFlexibleCell yes useConstantRatio yes langevinPiston on langevinPistonTarget 1.01325 # in bar -> 1 atm langevinPistonPeriod 200 langevinPistonDecay 200 langevinPistonTemp 298.0 #fixedAtomsForces off # Harmonic constraints #constraints on #consexp 4 #consref $inputcoor #conskfile $inputcoor #conskcol B # output # # Again, for keeping track of energies at each time frame we will # output at every step # outputname $outputname dcdfile $outputname.dcd XSTfile $outputname.xst binaryoutput no outputEnergies 1 dcdfreq 1 XSTfreq 200 restartname $outputname.rst restartfreq 200 # not used pairInteraction on pairInteractionFile cyt_ox_beta.pdb pairInteractionGroup1 1 pairInteractionGroup2 2 #pairInteractionSelf on ### coorfile open dcd cytreduced.dcd set ts 0 while { [coorfile read] != -1 } { incr ts firstTimestep $ts run 0 } coorfile close