Re: [gmx-users] dna with charmm36

2014-03-03 Thread Justin Lemkul
On 3/3/14, 8:13 PM, gromacs query wrote: Hi Justin Yes I chose termini 5TER or 3TER correctly but it only works fine when D*5 replaced by D* and D*3 by D* otherwise it ends with errors as said previously. As I would expect. Specific D*5/D*3 names are for AMBER force fields only. -Justin -

Re: [gmx-users] dna with charmm36

2014-03-03 Thread gromacs query
Hi Justin Yes I chose termini 5TER or 3TER correctly but it only works fine when D*5 replaced by D* and D*3 by D* otherwise it ends with errors as said previously. thanks JIom On Tue, Mar 4, 2014 at 1:00 AM, Justin Lemkul wrote: > > > On 3/3/14, 7:57 PM, gromacs query wrote: > >> Hi All >> >>

Re: [gmx-users] dna with charmm36

2014-03-03 Thread Justin Lemkul
On 3/3/14, 7:57 PM, gromacs query wrote: Hi All Its in continuation. I am confused about something. In PDB file obtained from NAB in AMBER I removed all Hydrogens and allow pdb2gmx to add them. PDB has DC5 as starting and DT3 as end residue and I get this error: pdb2gmx -ter -ff charmm36-jan2

Re: [gmx-users] dna with charmm36

2014-03-03 Thread gromacs query
Hi All Its in continuation. I am confused about something. In PDB file obtained from NAB in AMBER I removed all Hydrogens and allow pdb2gmx to add them. PDB has DC5 as starting and DT3 as end residue and I get this error: pdb2gmx -ter -ff charmm36-jan2014 -f test.pdb -o test.gro ( with or without

Re: [gmx-users] dna with charmm36

2014-02-05 Thread gromacs query
Hi Justin Thanks it worked, just to add I have to use -ignh as well. I think it does not detect some H at 5 end built from AMBER NAB programme. Jiom On Wed, Feb 5, 2014 at 3:13 PM, Justin Lemkul wrote: > > > On 2/5/14, 9:49 AM, gromacs query wrote: > >> Hi All >> >> I have simple DNA pdb whi

Re: [gmx-users] dna with charmm36

2014-02-05 Thread Justin Lemkul
On 2/5/14, 9:49 AM, gromacs query wrote: Hi All I have simple DNA pdb which has just 5 DA residues built from NAB in AMBER. I am trying to use pdb2gmx with charmm36-jan2014.ff downloaded from: http://mackerell.umaryland.edu/CHARMM_ff_params.html pdb2gmx -f a.pdb -o gro.pdb -ff charmm36-ja

[gmx-users] dna with charmm36

2014-02-05 Thread gromacs query
Hi All I have simple DNA pdb which has just 5 DA residues built from NAB in AMBER. I am trying to use pdb2gmx with charmm36-jan2014.ff downloaded from: http://mackerell.umaryland.edu/CHARMM_ff_params.html pdb2gmx -f a.pdb -o gro.pdb -ff charmm36-jan2014 I have changed all names according to