[gmx-users] Re: Problem with Amber99SB-ILDN ff

2013-07-22 Thread Melchor S.
Hi, This is more or less that I was thinking after look carefully all the errors. Thank you for your answer and your time. Melchor S. -- View this message in context: http://gromacs.5086.x6.nabble.com/Problem-with-Amber99SB-ILDN-ff-tp5009641p5010029.html Sent from the GROMACS Users Forum ma

Re: [gmx-users] Re: Problem with Amber99SB-ILDN ff

2013-07-22 Thread Alan
Hi I can't see which commands you typed. Your second try "/bin/sh: 1: -i: not found" means that you $PATH is not properly setup for Amber Tools. And if you using open babel, it has to be your $PATH as well. For the first case, it's all about which structure you were trying to run. >From the pdbs

[gmx-users] Re: Problem with Amber99SB-ILDN ff

2013-07-17 Thread Melchor S.
Hi again, I can give more details about acpype error. This is the error that I obtained, === | ACPYPE: AnteChamber PYthon Parser interfacE v. 2012-09-13 14:55:47Z Rev: 389 (c) 2012 AWSdS | =

Re: [gmx-users] Re: Problem with Amber99SB-ILDN ff

2013-07-10 Thread Alan
Hi there, You said ACPYPE didn't work… Can you give details? Have you try with GAFF first? If you don't mind, can you post me your molecule in private email? Thanks, Alan On 9 July 2013 22:34, Melchor S. wrote: > Sorry for the misunderstanding. I should had explained it better. > > I know th

Re: [gmx-users] Re: Problem with Amber99SB-ILDN ff

2013-07-10 Thread Justin Lemkul
On 7/9/13 5:34 PM, Melchor S. wrote: Sorry for the misunderstanding. I should had explained it better. I know that is a zwitterionic residue, I have run several simulations with the same PDB and with other forcefields. ACPYPE does not work, I tried it yesterday, but I have to check it. Antecha

[gmx-users] Re: Problem with Amber99SB-ILDN ff

2013-07-09 Thread Melchor S.
Sorry for the misunderstanding. I should had explained it better. I know that is a zwitterionic residue, I have run several simulations with the same PDB and with other forcefields. ACPYPE does not work, I tried it yesterday, but I have to check it. Antechamber I don't know, I have to try it. Als

Re: [gmx-users] Re: Problem with Amber99SB-ILDN ff

2013-07-09 Thread Justin Lemkul
On 7/9/13 11:23 AM, Melchor S. wrote: I am using gromacs 4.5.5, I didn't tell you yesterday. I have been tried a lot of things, but without any success. One of that I think has to work fine, is with the NGLU nomenclature, but when I use it, I obtain this There is a dangling bond at at least o

[gmx-users] Re: Problem with Amber99SB-ILDN ff

2013-07-09 Thread Melchor S.
I am using gromacs 4.5.5, I didn't tell you yesterday. I have been tried a lot of things, but without any success. One of that I think has to work fine, is with the NGLU nomenclature, but when I use it, I obtain this There is a dangling bond at at least one of the terminal ends and the force fiel

[gmx-users] Re: Problem with Amber99SB-ILDN ff

2013-07-08 Thread Melchor S.
For sure there are a lot of variable playing here, I only ask about the MET for curiosity, because I am a beginner in this kind of things we can say... I do : pdb2gmx -f pdb.pdb -p pdb.top -o pdb.gro -water spc -his -ter -posrefc 1. I don't specify nothing as separate chains or so on. I wil

Re: [gmx-users] Re: Problem with Amber99SB-ILDN ff

2013-07-08 Thread Justin Lemkul
On 7/8/13 7:00 AM, Melchor S. wrote: Ok, I will try it. Thank you. But when a chain starts with MET why this nomenclature is not needed? Because with MET works fine like any other forcefield. There are a lot of variables at play here that you haven't described (Gromacs version, pdb2gmx comm

[gmx-users] Re: Problem with Amber99SB-ILDN ff

2013-07-08 Thread Melchor S.
Ok, I will try it. Thank you. But when a chain starts with MET why this nomenclature is not needed? Because with MET works fine like any other forcefield. -- View this message in context: http://gromacs.5086.x6.nabble.com/Problem-with-Amber99SB-ILDN-ff-tp5009641p5009643.html Sent from the GROMA