Re: [gmx-users] aminoacids.n.tdb

2011-04-18 Thread Emine Deniz Tekin
Hi Mark, Thanks again. Your suggestion of introducing the lauroic acid as a pseudo-amino acid seems to solve my problem. Below is my corrected aminoacids.rtp file for the 6-Carbon case as a test. (I used the Berger lipid parameters.) Just to be sure, could you have a look at the file (I used

Re: [gmx-users] aminoacids.n.tdb

2011-04-18 Thread Mark Abraham
On 4/19/2011 6:55 AM, Emine Deniz Tekin wrote: Hi Mark, Thanks again. Your suggestion of introducing the lauroic acid as a pseudo-amino acid seems to solve my problem. Below is my corrected aminoacids.rtp file for the 6-Carbon case as a test. (I used the Berger lipid parameters.) Looks

Re: [gmx-users] aminoacids.n.tdb

2011-04-12 Thread Emine Deniz Tekin
Hi Mark, Thank you for your reply. But, I couldn’t understand very well what you meant “you can make one that uses backbone-style linking. Most of the forcefields will have examples of non-amino-acid terminating residues - these make a single peptide bond just like yours does.”. So, let me

Re: [gmx-users] aminoacids.n.tdb

2011-04-12 Thread Mark Abraham
On 12/04/2011 10:30 PM, Emine Deniz Tekin wrote: Hi Mark, Thank you for your reply. But, I couldn’t understand very well what you meant “you can make one that uses backbone-style linking. Most of the forcefields will have examples of non-amino-acid terminating residues - these make a

Re: [gmx-users] aminoacids.n.tdb

2011-04-09 Thread Mark Abraham
On 8/04/2011 11:25 PM, Emine Deniz Tekin wrote: Hi Gromacs users, I want to covalently link the lauroic acid to the Valine residue (it is a peptide (amide) bond), I know that I should update the specbond.dat.But before updating this file, I need the NH as an N terminal of the first residue

[gmx-users] aminoacids.n.tdb

2011-04-08 Thread Emine Deniz Tekin
Hi Gromacs users, I want to covalently link the lauroic acid to the Valine residue (it is a peptide (amide) bond), I know that I should update the specbond.dat. But before updating this file, I need the NH as an N terminal of the first residue (Valine). When I used pdb2gmx with the –ter flag,