[gmx-users] Topology for Charmm, regarding

2017-12-15 Thread RAHUL SURESH
Dear all

I have generated a structure.par file using ffTK toolkit of VMD. To use it
in gromacs I have generated the structure.top file using topoltool plugin
of vmd.

1. Now, how can i generate "itp" file to carry out, protein-ligand
simulation?

2. Will it be sufficient if I generate "gro" file using pdb2gmx command for
the simulation?

Thank you.

-- 
*Regards,*
*Rahul Suresh*
*Research Scholar*
*Bharathiar University*
*Coimbatore*
-- 
Gromacs Users mailing list

* Please search the archive at 
http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting!

* Can't post? Read http://www.gromacs.org/Support/Mailing_Lists

* For (un)subscribe requests visit
https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a 
mail to gmx-users-requ...@gromacs.org.


Re: [gmx-users] Topology for charmm

2017-03-21 Thread Justin Lemkul



On 3/21/17 4:54 AM, RAHUL SURESH wrote:

how to generate charmm topology file for gromacs using charmm2gmx python
script?

I have generated the stream file using cgenff.parachem server.?

I wish to have a comprehensive answer



Use the CGenFF conversion script here:

http://mackerell.umaryland.edu/charmm_ff.shtml#gromacs

and read the header of the script.  The syntax is quite simple.

-Justin

--
==

Justin A. Lemkul, Ph.D.
Ruth L. Kirschstein NRSA Postdoctoral Fellow

Department of Pharmaceutical Sciences
School of Pharmacy
Health Sciences Facility II, Room 629
University of Maryland, Baltimore
20 Penn St.
Baltimore, MD 21201

jalem...@outerbanks.umaryland.edu | (410) 706-7441
http://mackerell.umaryland.edu/~jalemkul

==
--
Gromacs Users mailing list

* Please search the archive at 
http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting!

* Can't post? Read http://www.gromacs.org/Support/Mailing_Lists

* For (un)subscribe requests visit
https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a 
mail to gmx-users-requ...@gromacs.org.


[gmx-users] Topology for charmm

2017-03-21 Thread RAHUL SURESH
how to generate charmm topology file for gromacs using charmm2gmx python
script?

I have generated the stream file using cgenff.parachem server.?

I wish to have a comprehensive answer
-- 
Gromacs Users mailing list

* Please search the archive at 
http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting!

* Can't post? Read http://www.gromacs.org/Support/Mailing_Lists

* For (un)subscribe requests visit
https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a 
mail to gmx-users-requ...@gromacs.org.


Re: [gmx-users] topology for charmm

2017-03-20 Thread Justin Lemkul



On 3/20/17 7:13 AM, RAHUL SURESH wrote:

How to reduce param and charge penality while generating stream file?



Large penalties indicate poor similarity with existing groups in the force 
field.  In those cases, you have to manually reparametrize those groups using 
the published CGenFF protocol and the tutorials we have online.


-Justin

--
==

Justin A. Lemkul, Ph.D.
Ruth L. Kirschstein NRSA Postdoctoral Fellow

Department of Pharmaceutical Sciences
School of Pharmacy
Health Sciences Facility II, Room 629
University of Maryland, Baltimore
20 Penn St.
Baltimore, MD 21201

jalem...@outerbanks.umaryland.edu | (410) 706-7441
http://mackerell.umaryland.edu/~jalemkul

==
--
Gromacs Users mailing list

* Please search the archive at 
http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting!

* Can't post? Read http://www.gromacs.org/Support/Mailing_Lists

* For (un)subscribe requests visit
https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a 
mail to gmx-users-requ...@gromacs.org.


[gmx-users] topology for charmm

2017-03-20 Thread RAHUL SURESH
How to reduce param and charge penality while generating stream file?

-- 
*Regards,*
*Rahul Suresh*
*Research Scholar*
*Bharathiar University*
*Coimbatore*
-- 
Gromacs Users mailing list

* Please search the archive at 
http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting!

* Can't post? Read http://www.gromacs.org/Support/Mailing_Lists

* For (un)subscribe requests visit
https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a 
mail to gmx-users-requ...@gromacs.org.