Re: [gmx-users] Overriding atom type.

2019-12-04 Thread Justin Lemkul




On 12/4/19 1:18 PM, Yogesh Sharma wrote:

greetings Dr. Justin

  I used charmm gui Input generator for ligands. these are H2O2, NO and
Urea. I got three files for each Charmm36.itp, ligand.itp and topol. top. I
added charmm36.itp files for each ligand under subsequent section with my
system.itp and added #include link for  ligand.itp files in my topol file.
Everything is working fine if, I am simulating them one by one but when
combined, system is showing overriding atom type error for common named
residues.
CHARMM-GUI provides a force field file that contains only the parameters 
you need for the system you have supplied it. In that way, it differs 
from a normal force field that already has everything, even parameters 
you may not need. Given this assumption that CHARMM-GUI makes, editing 
topologies it provides can be difficult. Any redundant parameters have 
to be removed if you're going to make changes to the set of files it 
provides.


Or use the CHARMM36 port (which has the full force field) and augment it 
with any new parameters that the CGenFF program (within CHARMM-GUI) came 
up with.


-Justin

--
==

Justin A. Lemkul, Ph.D.
Assistant Professor
Office: 301 Fralin Hall
Lab: 303 Engel Hall

Virginia Tech Department of Biochemistry
340 West Campus Dr.
Blacksburg, VA 24061

jalem...@vt.edu | (540) 231-3129
http://www.thelemkullab.com

==

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Re: [gmx-users] Overriding atom type.

2019-12-04 Thread Yogesh Sharma
greetings Dr. Justin

 I used charmm gui Input generator for ligands. these are H2O2, NO and
Urea. I got three files for each Charmm36.itp, ligand.itp and topol. top. I
added charmm36.itp files for each ligand under subsequent section with my
system.itp and added #include link for  ligand.itp files in my topol file.
Everything is working fine if, I am simulating them one by one but when
combined, system is showing overriding atom type error for common named
residues.
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Re: [gmx-users] Overriding atom type.

2019-12-04 Thread Justin Lemkul




On 12/4/19 6:32 AM, Yogesh Sharma wrote:

Thank you Dr. Alessandra

I actually generated topologies for my ligands  using charmm server

generated itp files had few overriding names, which are throwing errors
when combined.


You can't introduce duplicate parameters. If you have multiple ligands 
that make use of the same paramters, the directive [atomtypes], 
[bondtypes], etc. must be merged into a single .itp file and #included.


I will note that these atom types are already standard in our CHARMM36 
port (including CGenFF) for GROMACS. I don't know which server you used 
but these should not be new atom types.


-Justin


Please have a look at the itp files pasted here.
...
[ atomtypes ]
; name at.num mass charge ptype sigma epsilon ; sigma_14 epsilon_14
CG2O6 612.0110  0.600 A3.56359487256e-01
  2.928800e-01
 HGP1 1 1.0080  0.340 A4.00013524445e-02
  1.924640e-01
NG2S2 714.0070 -0.690 A3.29632525712e-01
  8.368000e-01
OG2D1 815.9994 -0.580 A3.02905564168e-01
  5.020800e-01 ;   2.49451641079e-015.020800e-01

[ bondtypes ]
; i j func b0 Kb
   CG2O6   NG2S2 1  1.36e-01  3.598240e+05
   CG2O6   OG2D1 1  1.23e-01  5.439200e+05
   NG2S2HGP1 1  1.00e-01  4.016640e+05

[ pairtypes ]
; i j func sigma1-4 epsilon1-4
   CG2O6   OG2D1 1  3.02905564168e-01  3.83469934154e-01
HGP1   OG2D1 1  1.44726496762e-01  3.10857403193e-01
   NG2S2   OG2D1 1  2.89542083396e-01  6.48182492821e-01
   OG2D1   OG2D1 1  2.49451641079e-01  5.0208000e-01

[ angletypes ]
; i j k func th0 cth S0 Kub
   CG2O6   NG2S2HGP1 5  1.200e+02  4.184e+02  0.000e+00
  0.000e+00
HGP1   NG2S2HGP1 5  1.200e+02  1.9246400e+02  0.000e+00
  0.000e+00
   NG2S2   CG2O6   NG2S2 5  1.150e+02  5.8576000e+02  0.000e+00
  0.000e+00
   NG2S2   CG2O6   OG2D1 5  1.225e+02  6.276e+02  2.370e-01
  4.184e+04

[ dihedraltypes ]
; i j k l func phi0 cp mult
   NG2S2   CG2O6   NG2S2HGP1 9  1.80e+02  6.276000e+00  2
   OG2D1   CG2O6   NG2S2HGP1 9  1.80e+02  5.857600e+00  2

[ dihedraltypes ]
; i j k l func q0 cq
   CG2O6   NG2S2   NG2S2   OG2D1 2  0.00e+00  6.694400e+02

[ atomtypes ]
; name at.num mass charge ptype sigma epsilon ; sigma_14 epsilon_14
 HGP1 1 1.0080  0.369 A4.00013524445e-02
  1.924640e-01
NG2D1 714.0070 -0.370 A3.29632525712e-01
  8.368000e-01
OG2D1 815.9994  0.001 A3.02905564168e-01
  5.020800e-01 ;   2.49451641079e-015.020800e-01

[ bondtypes ]
; i j func b0 Kb
   NG2D1HGP1 1  1.00e-01  3.807440e+05
   NG2D1   OG2D1 1  1.225000e-01  4.853440e+05

[ pairtypes ]
; i j func sigma1-4 epsilon1-4
HGP1   OG2D1 1  1.44726496762e-01  3.10857403193e-01
   NG2D1   OG2D1 1  2.89542083396e-01  6.48182492821e-01
   OG2D1   OG2D1 1  2.49451641079e-01  5.0208000e-01

[ angletypes ]
; i j k func th0 cth S0 Kub
   OG2D1   NG2D1HGP1 5  1.130e+02  4.1003200e+02  0.000e+00
  0.000e+00

[ defaults ]
; nbfunc comb-rule gen-pairs fudgeLJ fudgeQQ
1 2 yes 1.0 1.0

[ atomtypes ]
; name at.num mass charge ptype sigma epsilon ; sigma_14 epsilon_14
 HGP1 1 1.0080  0.500 A4.00013524445e-02
  1.924640e-01
OG311 815.9994 -0.500 A3.14487247504e-01
  8.037464e-01

[ bondtypes ]
; i j func b0 Kb
   OG311HGP1 1  9.60e-02  4.560560e+05
   OG311   OG311 1  1.42e-01  3.581504e+05

[ angletypes ]
; i j k func th0 cth S0 Kub
   OG311   OG311HGP1 5  1.015e+02  5.0208000e+02  0.000e+00
  0.000e+00

[ dihedraltypes ]
; i j k l func phi0 cp mult
HGP1   OG311   OG311HGP1 9  0.00e+00  7.531200e-01  3
..
I just combined files into my system itp file (solvated membrane protein)
Can i simulate these three molecules together?


--
==

Justin A. Lemkul, Ph.D.
Assistant Professor
Office: 301 Fralin Hall
Lab: 303 Engel Hall

Virginia Tech Department of Biochemistry
340 West Campus Dr.
Blacksburg, VA 24061

jalem...@vt.edu | (540) 231-3129
http://www.thelemkullab.com

==

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Re: [gmx-users] Overriding atom type.

2019-12-04 Thread Yogesh Sharma
Thank you Dr. Alessandra

I actually generated topologies for my ligands  using charmm server

generated itp files had few overriding names, which are throwing errors
when combined.
Please have a look at the itp files pasted here.
...
[ atomtypes ]
; name at.num mass charge ptype sigma epsilon ; sigma_14 epsilon_14
   CG2O6 612.0110  0.600 A3.56359487256e-01
 2.928800e-01
HGP1 1 1.0080  0.340 A4.00013524445e-02
 1.924640e-01
   NG2S2 714.0070 -0.690 A3.29632525712e-01
 8.368000e-01
   OG2D1 815.9994 -0.580 A3.02905564168e-01
 5.020800e-01 ;   2.49451641079e-015.020800e-01

[ bondtypes ]
; i j func b0 Kb
  CG2O6   NG2S2 1  1.36e-01  3.598240e+05
  CG2O6   OG2D1 1  1.23e-01  5.439200e+05
  NG2S2HGP1 1  1.00e-01  4.016640e+05

[ pairtypes ]
; i j func sigma1-4 epsilon1-4
  CG2O6   OG2D1 1  3.02905564168e-01  3.83469934154e-01
   HGP1   OG2D1 1  1.44726496762e-01  3.10857403193e-01
  NG2S2   OG2D1 1  2.89542083396e-01  6.48182492821e-01
  OG2D1   OG2D1 1  2.49451641079e-01  5.0208000e-01

[ angletypes ]
; i j k func th0 cth S0 Kub
  CG2O6   NG2S2HGP1 5  1.200e+02  4.184e+02  0.000e+00
 0.000e+00
   HGP1   NG2S2HGP1 5  1.200e+02  1.9246400e+02  0.000e+00
 0.000e+00
  NG2S2   CG2O6   NG2S2 5  1.150e+02  5.8576000e+02  0.000e+00
 0.000e+00
  NG2S2   CG2O6   OG2D1 5  1.225e+02  6.276e+02  2.370e-01
 4.184e+04

[ dihedraltypes ]
; i j k l func phi0 cp mult
  NG2S2   CG2O6   NG2S2HGP1 9  1.80e+02  6.276000e+00  2
  OG2D1   CG2O6   NG2S2HGP1 9  1.80e+02  5.857600e+00  2

[ dihedraltypes ]
; i j k l func q0 cq
  CG2O6   NG2S2   NG2S2   OG2D1 2  0.00e+00  6.694400e+02

[ atomtypes ]
; name at.num mass charge ptype sigma epsilon ; sigma_14 epsilon_14
HGP1 1 1.0080  0.369 A4.00013524445e-02
 1.924640e-01
   NG2D1 714.0070 -0.370 A3.29632525712e-01
 8.368000e-01
   OG2D1 815.9994  0.001 A3.02905564168e-01
 5.020800e-01 ;   2.49451641079e-015.020800e-01

[ bondtypes ]
; i j func b0 Kb
  NG2D1HGP1 1  1.00e-01  3.807440e+05
  NG2D1   OG2D1 1  1.225000e-01  4.853440e+05

[ pairtypes ]
; i j func sigma1-4 epsilon1-4
   HGP1   OG2D1 1  1.44726496762e-01  3.10857403193e-01
  NG2D1   OG2D1 1  2.89542083396e-01  6.48182492821e-01
  OG2D1   OG2D1 1  2.49451641079e-01  5.0208000e-01

[ angletypes ]
; i j k func th0 cth S0 Kub
  OG2D1   NG2D1HGP1 5  1.130e+02  4.1003200e+02  0.000e+00
 0.000e+00

[ defaults ]
; nbfunc comb-rule gen-pairs fudgeLJ fudgeQQ
1 2 yes 1.0 1.0

[ atomtypes ]
; name at.num mass charge ptype sigma epsilon ; sigma_14 epsilon_14
HGP1 1 1.0080  0.500 A4.00013524445e-02
 1.924640e-01
   OG311 815.9994 -0.500 A3.14487247504e-01
 8.037464e-01

[ bondtypes ]
; i j func b0 Kb
  OG311HGP1 1  9.60e-02  4.560560e+05
  OG311   OG311 1  1.42e-01  3.581504e+05

[ angletypes ]
; i j k func th0 cth S0 Kub
  OG311   OG311HGP1 5  1.015e+02  5.0208000e+02  0.000e+00
 0.000e+00

[ dihedraltypes ]
; i j k l func phi0 cp mult
   HGP1   OG311   OG311HGP1 9  0.00e+00  7.531200e-01  3
..
I just combined files into my system itp file (solvated membrane protein)
Can i simulate these three molecules together?
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Re: [gmx-users] Overriding atom type.

2019-12-04 Thread Alessandra Villa
Hi,

On Wed, Dec 4, 2019 at 7:41 AM Yogesh Sharma  wrote:

> Hello Users,
> I was trying to run grompp  for a membrane protein - ligand dynamics. I am
> using  4 5 ligands together. Under grompp run I got error overriding
> atomtype HGP1. Came out two ligands were sharing similar naming in atomtype
> section. I wanted to ask is it harmless to change it manually are there any
> conventions for it ? following this are there any other changes  in
> topology file that i need to make?
> [ atomtypes ]
> ; name at.num mass charge ptype sigma epsilon ; sigma_14 epsilon_14
>CG2O6 612.0110  0.600 A3.56359487256e-01
>  2.928800e-01
> HGP1 1 1.0080  0.340 A4.00013524445e-02
>  1.924640e-01
>NG2S2 714.0070 -0.690 A3.29632525712e-01
>  8.368000e-01
>OG2D1 815.9994 -0.580 A3.02905564168e-01
>  5.020800e-01 ;
> [ atomtypes ]
> ; name at.num mass charge ptype sigma epsilon ; sigma_14 epsilon_14
> HGP1 1 1.0080  0.500 A4.00013524445e-02
>  1.924640e-01
>OG311 815.9994 -0.500 A3.14487247504e-01
>  8.037464e-01
>

[ atomtypes ] section in the top file is used to to customize your
non-bonded parameters
One can use this section to define new atom types, but this should take
place in line with the rest of the force field parameters.

In the above case I have noticed that non-bonded parameters (LJ) for HGP1
are identical in the two  [ atomtypes ],
and the atomic charge values are readed from the top file section [atoms].
If it is the case, you do not need to define it twice.

Best regards
Alessandra




Do you used custermized non-bonded parameters ?



> * thank you for your precious time.*
>
> * with  regards*
> *Yogesh Sharma*
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[gmx-users] Overriding atom type.

2019-12-03 Thread Yogesh Sharma
Hello Users,
I was trying to run grompp  for a membrane protein - ligand dynamics. I am
using  4 5 ligands together. Under grompp run I got error overriding
atomtype HGP1. Came out two ligands were sharing similar naming in atomtype
section. I wanted to ask is it harmless to change it manually are there any
conventions for it ? following this are there any other changes  in
topology file that i need to make?
[ atomtypes ]
; name at.num mass charge ptype sigma epsilon ; sigma_14 epsilon_14
   CG2O6 612.0110  0.600 A3.56359487256e-01
 2.928800e-01
HGP1 1 1.0080  0.340 A4.00013524445e-02
 1.924640e-01
   NG2S2 714.0070 -0.690 A3.29632525712e-01
 8.368000e-01
   OG2D1 815.9994 -0.580 A3.02905564168e-01
 5.020800e-01 ;
[ atomtypes ]
; name at.num mass charge ptype sigma epsilon ; sigma_14 epsilon_14
HGP1 1 1.0080  0.500 A4.00013524445e-02
 1.924640e-01
   OG311 815.9994 -0.500 A3.14487247504e-01
 8.037464e-01
* thank you for your precious time.*

* with  regards*
*Yogesh Sharma*
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