[AMBER] RESTRAINT versus NMR restraint in output?

From: Matthew Guberman-Pfeffer via AMBER <amber.ambermd.org>
Date: Mon, 24 Oct 2022 08:51:51 -0400

Dear Amber community,

I noticed that the RESTRAINT ad NMR restraint energies in my output are not the same, even though I am only using NMR restraints. Why is this?

Example:

 NSTEP = 9970000 TIME(PS) = 20980.000 TEMP(K) = 301.09 PRESS = 0.0
 Etot = -360161.7694 EKtot = 87999.5469 EPtot = -448161.3163
 BOND = 1717.5859 ANGLE = 4919.2560 DIHED = 7030.1272
 1-4 NB = 1944.5783 1-4 EEL = 30719.2525 VDWAALS = 60175.8386
 EELEC = -554668.9000 EHBOND = 0.0000 RESTRAINT = 0.9453
 EAMBER (non-restraint) = -448162.2616
 EKCMT = 0.0000 VIRIAL = 0.0000 VOLUME = 1450358.7196
                                                    Density = 1.0085
 ------------------------------------------------------------------------------

 NMR restraints: Bond = 3.392 Angle = 0.000 Torsion = 0.000
===============================================================================

Input:
&cntrl
  ntt=3, gamma_ln=2.0, temp0=300.0,
  ntc=2, ntf=2, ntb=2,
  ntp=1, barostat=2, pres0=1.0, taup=1.0,
  cut=10.0,
  dt=0.002, nstlim=10000000,
  ig=-1,
  ntwr=10000, ntwx=10000, ntpr=10000,
  ntxo=2, ioutfm=1, iwrap=0,
  irest=1, ntx=5,
  ntr=0, nmropt=1,
/
&wt type='DUMPFREQ', istep1=100 /
&wt type='END' /
DISANG=DistancenRestrant.rst
DUMPAVE=DistanceRestrant.dat

DistancenRestrant.rst defines six distance restraints.

Best,
Matthew


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Received on Mon Oct 24 2022 - 06:00:03 PDT
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