Re: [AMBER] How to add the charged sphere (ion) with arbitrary charge to my PDB file.

From: Bill Ross <ross.cgl.ucsf.edu>
Date: Sun, 3 Sep 2017 18:11:50 -0700

  > desc MEM

to see what is in it.

Bill


On 9/3/17 6:10 PM, Parviz Seifpanahi Shabane wrote:
> Thank you, Bill. right now everything works except setting the tail
> and head of the residue. first I used this commands from  the tutorial
> which are not correct
> set MEM head MEM.MEM.N
> set MEM tail MEM.MEM.C
> and then I tried something like this
> set MEM head MEM.1.N
> from here
> (http://upjv.q4md-forcefieldtools.org/REDDB/projects/F-86/script1.ff).
> and I got this error:
> The value must be of the type: Atom
> ?
>
> On Fri, Sep 1, 2017 at 8:03 PM, Bill Ross <ross.cgl.ucsf.edu
> <mailto:ross.cgl.ucsf.edu>> wrote:
>
> Oops, or change CU to Cu in the NONBON of your frcmod.
>
> Bill
>
>
> On 9/1/17 5:01 PM, Bill Ross wrote:
> > E.g. you have
> >
> >      mods = loadAmberParams frcmod.ionsjc_tip3p
> >
> > Look at that file, and emulate it for the params of your Cu.
> >
> > Bill
> >
> > On 9/1/17 4:57 PM, Parviz Seifpanahi Shabane wrote:
> >> I am using Amber 16 on Ubuntu 16.04, I followed your
> suggestions but got
> >> something (Could not see the N). I tried something new instead
> of using my
> >> PDB files, in xleap, I started from Thr residue, means
> >>> edit THR
> >> and then added the CU atoms to the structure and then
> >>> saveoff THR TCU.lib
> >> after that manually I changed all THR inside of this lib file
> to TCU. by
> >> this trick problem with the lib file solved (I do not get atom
> type error
> >> anymore).
> >>    for TCU.frcmod (for CU ions) I used the file in the tutorial (
> >> http://ambermd.org/tutorials/advanced/tutorial1_adv/index.htm
> <http://ambermd.org/tutorials/advanced/tutorial1_adv/index.htm>):
> >>
> >> #  modifications to force field for poplar plastocyanin
> >>
> >> MASS
> >> SM 32.06
> >> CU 65.36
> >>
> >> BOND
> >> NB-CU  70.000   2.05000 #kludge by JRS
> >> CU-S  70.000   2.10000 #kludge by JRS
> >> CU-SM  70.000   2.90000 #for pcy
> >> CT-SM 222.000   1.81000 #met(aa)
> >>
> >> ANGLE
> >> CU-NB-CV   50.000     126.700  #JRS estimate
> >> CU-NB-CR   50.000     126.700  #JRS estimate
> >> CU-NB-CP   50.000     126.700  #JRS estimate
> >> CU-NB-CC   50.000     126.700  #JRS estimate
> >> CU-SM-CT   50.000     120.000  #JRS estimate
> >> CU-S -CT   50.000     120.000  #JRS estimate
> >> CU-S -C2   50.000     120.000  #JRS estimate
> >> CU-S -C3   50.000     120.000  #JRS estimate
> >> NB-CU-NB   10.000     110.000  #dac estimate
> >> NB-CU-SM   10.000     110.000  #dac estimate
> >> NB-CU-S    10.000     110.000  #dac estimate
> >> SM-CU-S    10.000     110.000  #dac estimate
> >> CU-SM-CT   50.000     120.000  #JRS estimate
> >> CT-CT-SM   50.000     114.700    #met(aa)
> >> HC-CT-SM   35.000     109.500
> >> H1-CT-SM   35.000     109.500
> >> CT-SM-CT   62.000     98.900  #MET(OL)
> >>
> >> DIHE
> >> X -NB-CU-X    1       0.000 180.000       3.000
> >> X -CU-SM-X    1       0.000 180.000       3.000
> >> X -CU-S -X    1       0.000 180.000       3.000
> >> X -CT-SM-X    3       1.000   0.000       3.000
> >>
> >> NONBON
> >> CU    2.20      0.200
> >> SM    2.00      0.200
> >>
> >> The new error that I am getting is
> >>    For atom: .R<YCU 138>.A<Cu22 22> Could not find vdW (or other)
> >> parameters for type: Cu
> >> and this my leap script:
> >> source $AMBERHOME/dat/leap/cmd/oldff/leaprc.ff10
> >> loadoff YCU1.lib
> >> loadamberparams YCU.frcmod
> >> loadAmberParams frcmod
> >> set default PBradii bondi
> >> mods = loadAmberParams frcmod.ionsjc_tip3p
> >> mol = loadpdb H4-DNA-Mutated-clean-YAG-test.pdb
> >>
> >> #addions mol Na+ 0
> >> #addions mol Cl- 0
> >>
> >> #addions2 mol Na+ 34
> >> #addions2 mol Cl- 34
> >>
> >> solvateBox mol OPCBOX  4.22 iso
> >> saveamberparm mol H4-DNA-OPC-FF10.top H4-DNA-OPC-FF10.crd
> >> quit
> >>
> >>    What should I do now?
> >>
> >> Thank you for you help.
> >>
> >>
> >>
> >>
> >>
> >> On Thu, Aug 31, 2017 at 3:50 PM, Bill Ross <ross.cgl.ucsf.edu
> <mailto:ross.cgl.ucsf.edu>> wrote:
> >>
> >>> You should be able to click the draw box top right, then click
> on one
> >>> atom and draw to the next before releasing.
> >>>
> >>> If that doesn't work, what kind of hardware/OS are you running on?
> >>>
> >>> It would be faster to
> >>>
> >>>    > x = loadpdb the.pdb
> >>>
> >>>    > bondbydistance x
> >>>
> >>>    > edit x
> >>>
> >>> Then delete the extra bonds, and draw the missing ones.
> >>>
> >>> Bill
> >>>
> >>>
> >>> On 8/31/17 10:11 AM, Parviz Seifpanahi Shabane wrote:
> >>>> Yes, I did, this what I am getting (attached image) after
> loading TMN.pdb
> >>>> to xleap.
> >>>>
> >>>> On Thu, Aug 31, 2017 at 1:02 PM, Bill Ross <ross.cgl.ucsf.edu
> <mailto:ross.cgl.ucsf.edu>> wrote:
> >>>>
> >>>>> I only see 1 N atom in the pdb below, and it appears in xleap.
> >>>>>
> >>>>> I was able to draw bonds between MN and O, N.
> >>>>>
> >>>>> Did you click on 'Draw' on the top of the xleap editor?
> >>>>>
> >>>>> Bill
> >>>>>
> >>>>> On 8/31/17 8:11 AM, Parviz Seifpanahi Shabane wrote:
> >>>>>> Dear AMBER users,
> >>>>>> I need to add the highly charged ion (-120 e) to my system
> in certain
> >>>>> place
> >>>>>> in my PDB file before running simulation, I am following
> this tutorial:
> >>>>>>
> http://ambermd.org/tutorials/advanced/tutorial1_adv/index.htm
> <http://ambermd.org/tutorials/advanced/tutorial1_adv/index.htm>
> >>>>>> I picked the residue which has the best position (Threonine
> (Thr)) for
> >>> my
> >>>>>> purpose and created the new residue named TMN by adding the
> Mn ion to
> >>> it.
> >>>>>> this my TMN.pdb file:
> >>>>>>
> >>>>>> ATOM    525  N   TMN B  96 55.589  87.183   6.224  0.00  0.00
> >>>>>         N
> >>>>>> ATOM    526  CA  TMN B  96 56.332  86.013   5.728  0.00  0.00
> >>>>>         C
> >>>>>> ATOM    527  C   TMN B  96 57.725  86.436   5.230  0.00  0.00
> >>>>>         C
> >>>>>> ATOM    528  O   TMN B  96 57.865  87.357   4.412  0.00  0.00
> >>>>>         O
> >>>>>> ATOM    529  CB  TMN B  96 55.580  85.363   4.578  0.00  0.00
> >>>>>         C
> >>>>>> ATOM    530  CG2 TMN B  96 56.358  84.123   3.985  0.00  0.00
> >>>>>         C
> >>>>>> ATOM    531  OG1 TMN B  96 54.305  84.932   5.050  0.00  0.00
> >>>>>         O
> >>>>>> ATOM    908  H   TMN B  96 54.624  87.243   5.931  0.00  0.00
> >>>>>         H
> >>>>>> ATOM    909  HA  TMN B  96 56.448  85.287   6.533  0.00  0.00
> >>>>>         H
> >>>>>> ATOM    910  HB  TMN B  96 55.451  86.086   3.773  0.00  0.00
> >>>>>         H
> >>>>>> ATOM    911 HG21 TMN B  96 55.745  83.227   4.084  0.00  0.00
> >>>>>         H
> >>>>>> ATOM    912 HG22 TMN B  96 56.575  84.299   2.931  0.00  0.00
> >>>>>         H
> >>>>>> ATOM    913 HG23 TMN B  96 57.292  83.985   4.530  0.00  0.00
> >>>>>         H
> >>>>>> ATOM    914  HG1 TMN B  96 54.425  84.288   5.752  0.00  0.00
> >>>>>         H
> >>>>>> ATOM  13626 MN   TMN B  96 55.100  90.254   3.700  0.97 51.89
> >>>>>        MN
> >>>>>> problem is in editing step for creating TMN unit and
> library file I can
> >>>>> not
> >>>>>> see the Nitrogen (N) atoms (edit TMN.pdb) and I can not
> draw the bonds
> >>>>>> correctly.
> >>>>>> any idea?
> >>>>> _______________________________________________
> >>>>> AMBER mailing list
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> >>>>> http://lists.ambermd.org/mailman/listinfo/amber
> <http://lists.ambermd.org/mailman/listinfo/amber>
> >>>>>
> >>>>
> >>>>
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>
>
> --
> Parviz Seifpanahi
> Ph.D. Candidate
> Department of Physics
> Virgina Tech, Blacksburg, Va 24061

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Received on Sun Sep 03 2017 - 18:30:03 PDT
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