Re: [gmx-users] Metal interactions with proteins

2017-11-20 Thread Justin Lemkul
On 11/20/17 12:01 PM, RAHUL SURESH wrote: Dear Justin On adding this to the rtp file I received the error "Atom in residue CU 1 was not found in rtp entry CU with 1 atoms while sorting atoms". for the pdb2gmx command. Also the warning state * "Warning: Starting residue CU1 in chain not i

Re: [gmx-users] Metal interactions with proteins

2017-11-20 Thread RAHUL SURESH
Dear Justin On adding this to the rtp file I received the error "Atom in residue CU 1 was not found in rtp entry CU with 1 atoms while sorting atoms". for the pdb2gmx command. Also the warning state * "Warning: Starting residue CU1 in chain not identified as Protein/RNA/DNA.Problem with chai

Re: [gmx-users] Metal interactions with proteins

2017-11-20 Thread Justin Lemkul
On 11/20/17 11:05 AM, RAHUL SURESH wrote: Dear Justin Sorry for the inconvenience. Tried every possible way and couldn't find any proper way to add datas into merged.rtp. As you have suggested, Yes i have made some incorrect format entry. Can you please guide me to make a valid entry in rtp fi

Re: [gmx-users] Metal interactions with proteins

2017-11-20 Thread Justin Lemkul
On 11/20/17 11:13 AM, Justin Lemkul wrote: On 11/20/17 11:05 AM, RAHUL SURESH wrote: Dear Justin Sorry for the inconvenience. Tried every possible way and couldn't find any proper way to add datas into merged.rtp. As you have suggested, Yes i have made some incorrect format entry. Can yo

Re: [gmx-users] Metal interactions with proteins

2017-11-20 Thread RAHUL SURESH
Dear Justin Sorry for the inconvenience. Tried every possible way and couldn't find any proper way to add datas into merged.rtp. As you have suggested, Yes i have made some incorrect format entry. Can you please guide me to make a valid entry in rtp file? Which one is the right format. I have sear

Re: [gmx-users] Metal interactions with proteins

2017-11-17 Thread Justin Lemkul
On 11/17/17 2:30 AM, RAHUL SURESH wrote: Dear Justin I have tried various measures to over come it. 1. I added Cu in merged.rtp and still the error prevails. *Error: Fatal error:in .rtp file in residue ions at line:Cu* This appears to indicate an incorrectly formatted .rtp entr

Re: [gmx-users] Metal interactions with proteins

2017-11-16 Thread RAHUL SURESH
Dear Justin I have tried various measures to over come it. 1. I added Cu in merged.rtp and still the error prevails. *Error: Fatal error:in .rtp file in residue ions at line:Cu* 2. I added TER in the pdb file and still the same error. Then I removed Cu from merged.rtp and again error

Re: [gmx-users] Metal interactions with proteins

2017-11-16 Thread Justin Lemkul
On 11/16/17 1:53 PM, RAHUL SURESH wrote: Dear Justin Why is there no aminoacids.rtp file in charmm36ff? Because the way the CHARMM topology and parameter files are constructed makes it nearly impossible to actually write out only certain types of molecules, we lumped (almost) everything in

Re: [gmx-users] Metal interactions with proteins

2017-11-16 Thread RAHUL SURESH
Dear Justin Why is there no aminoacids.rtp file in charmm36ff? As mentioned before I have added the metal ion parameters in nonbonded.itp, ions.ipt and atomtypes.itp. While performing simulation using the command *"gmx pdb2gmx -f cu.pdb -o cu.gro -p cu.top" *I receive the following error "Residue

Re: [gmx-users] Metal interactions with proteins

2017-11-16 Thread RAHUL SURESH
That’s good enough to perform the simulation. Thank you Justin. On Thu, 16 Nov 2017 at 6:33 PM, Justin Lemkul wrote: > > > On 11/16/17 4:12 AM, RAHUL SURESH wrote: > > On Wed, Nov 15, 2017 at 6:58 PM, Justin Lemkul wrote: > > > >> > >> On 11/15/17 6:44 AM, RAHUL SURESH wrote: > >> > >>> Hell

Re: [gmx-users] Metal interactions with proteins

2017-11-16 Thread Justin Lemkul
On 11/16/17 4:12 AM, RAHUL SURESH wrote: On Wed, Nov 15, 2017 at 6:58 PM, Justin Lemkul wrote: On 11/15/17 6:44 AM, RAHUL SURESH wrote: Hello users I am performing Metal-protein interactions with Charmm36ff using gromacs. The metals under study are Cu and Ag in +2 state. Is it sufficient

Re: [gmx-users] Metal interactions with proteins

2017-11-16 Thread RAHUL SURESH
On Wed, Nov 15, 2017 at 6:58 PM, Justin Lemkul wrote: > > > On 11/15/17 6:44 AM, RAHUL SURESH wrote: > >> Hello users >> >> I am performing Metal-protein interactions with Charmm36ff using gromacs. >> The metals under study are Cu and Ag in +2 state. Is it sufficient to add >> the topology,i.e th

Re: [gmx-users] Metal interactions with proteins

2017-11-15 Thread Justin Lemkul
On 11/15/17 6:44 AM, RAHUL SURESH wrote: Hello users I am performing Metal-protein interactions with Charmm36ff using gromacs. The metals under study are Cu and Ag in +2 state. Is it sufficient to add the topology,i.e the necessary parameters (LJ-potentials) in nonbonded.itp and ions.itp alone

[gmx-users] Metal interactions with proteins

2017-11-15 Thread RAHUL SURESH
Hello users I am performing Metal-protein interactions with Charmm36ff using gromacs. The metals under study are Cu and Ag in +2 state. Is it sufficient to add the topology,i.e the necessary parameters (LJ-potentials) in nonbonded.itp and ions.itp alone? In case of nonbonded.itp file, i find char