[gmx-users] Atoms are fused after inserting in membrane

2013-03-26 Thread Shine Devaraj
Dear gromacs users I have prepared a complex system consists of a protein and carbohydrate in lipid membrane using the KALP-membrane tutorial. After concatenating the three coordinate files, I visualized using VMD, but around 18 lipid atoms and more than 25 water molecules are joined with my

Re: [gmx-users] problem in converting coarse grained structure to fine strcture

2013-03-26 Thread Djurre de Jong-Bruinink
I used the command g_fg2cg to convert a coarse grained structure into corresponding fine strcture, and i found that the water molecues can be transformed correctly, but there is a big mess in the protien , and i could not get correct protein strcture, can anyone give me some suggestion?

Re: [gmx-users] scaling factor for rna/dna

2013-03-26 Thread Erik Marklund
Hi, I suggest contacting people in Johan Åqvist's lab. I'm sure they know exactly what pitfalls there may be with regards to the choice of LIE parameters and what has been done for different types of molecules. Erik On 26 Mar 2013, at 02:42, Vishwambhar Bhandare vishway...@gmail.com wrote:

Re: [gmx-users] position restraints

2013-03-26 Thread Shima Arasteh
Hi Dear Justin First of all, I request you that not to shout at me! I am so sorry to ask you questions about position restraints again! I know I have sent you such emails before, and you suggested me to read include file mechanism in web site. I did this and also read some emails in forum.

Re: [gmx-users] position restraints

2013-03-26 Thread Justin Lemkul
On 3/26/13 7:01 AM, Shima Arasteh wrote: Hi Dear Justin First of all, I request you that not to shout at me! I am so sorry to ask you questions about position restraints again! I haven't done any shouting, but statements like this seem to imply that I have. The point of this forum is

Re: [gmx-users] Atoms are fused after inserting in membrane

2013-03-26 Thread Justin Lemkul
On 3/26/13 5:17 AM, Shine Devaraj wrote: Dear gromacs users I have prepared a complex system consists of a protein and carbohydrate in lipid membrane using the KALP-membrane tutorial. After concatenating the three coordinate files, I visualized using VMD, but around 18 lipid atoms and more

Re: [gmx-users] position restraints

2013-03-26 Thread Shima Arasteh
No, You have not shouted at me, never! But sometimes I think that I deserve to be shouted !! I deeply appreciate your patience and attention. Thanks for your time and your replies. In my protein, chains A and B are identical.   Sincerely, Shima - Original Message - From: Justin

[gmx-users] About Deutrium Order Parameter

2013-03-26 Thread vidhya sankar
Dear Justin Thank you for your Previous reply,  I want to calculate  Variation of deuterium order Parameter With respect to Time  for Entire Trajectory and Hydration Number of Phosphate oxygen For My Entire

Re: [gmx-users] position restraints

2013-03-26 Thread Justin Lemkul
On 3/26/13 8:39 AM, Shima Arasteh wrote: No, You have not shouted at me, never! But sometimes I think that I deserve to be shouted !! I deeply appreciate your patience and attention. Thanks for your time and your replies. In my protein, chains A and B are identical. If they are

Re: [gmx-users] About Deutrium Order Parameter

2013-03-26 Thread Justin Lemkul
On 3/26/13 11:24 AM, vidhya sankar wrote: Dear Justin Thank you for your Previous reply, I want to calculate Variation of deuterium order Parameter With respect to Time for Entire Trajectory and

Re: Fw: [gmx-users] position restraints

2013-03-26 Thread Justin Lemkul
On Tue, Mar 26, 2013 at 1:01 PM, Shima Arasteh shima_arasteh2...@yahoo.comwrote: Have a look at processed topology file here please; I see that position restraints are brought after chain_A but not brought after chain_B. With these settings: ; Include chain topologies #ifdef POSRES

Re:Re: [gmx-users] problem in converting coarse grained structure to fine strcture

2013-03-26 Thread xiao
Dear Groetnis, Thank you very much for your nice suggestion. BW Fugui At 2013-03-26 17:34:08,Djurre de Jong-Bruinink djurredej...@yahoo.com wrote: I used the command g_fg2cg to convert a coarse grained structure into corresponding fine strcture, and i found that the water molecues can be

Re: Fw: [gmx-users] position restraints

2013-03-26 Thread Shima Arasteh
The inclusion part was edited again in original top file. I dont know why I had written that! Sorry. But about last itp files, which you mentioned that they are created incorrectly, 1) I 'd like to know what itp file should be created? In my own, I just included the chain_B.itp file with the

Re: Fw: [gmx-users] position restraints

2013-03-26 Thread Justin Lemkul
On Tue, Mar 26, 2013 at 2:20 PM, Shima Arasteh shima_arasteh2...@yahoo.comwrote: The inclusion part was edited again in original top file. I dont know why I had written that! Sorry. But about last itp files, which you mentioned that they are created incorrectly, 1) I 'd like to know what itp

Re: Fw: [gmx-users] position restraints

2013-03-26 Thread Shima Arasteh
Thanks for all your explanations. What I get as a conclusion is this: itp files are dependent to the numbering of aoms in molecule type directive and not any other things! Each posre.itp file created by genrestr should be in consistent with the molculetype numbering! Sincerely, Shima

Re: Fw: [gmx-users] position restraints

2013-03-26 Thread Justin Lemkul
On Tue, Mar 26, 2013 at 2:33 PM, Shima Arasteh shima_arasteh2...@yahoo.comwrote: Thanks for all your explanations. What I get as a conclusion is this: itp files are dependent to the numbering of aoms in molecule type directive and not any other things! Each posre.itp file created by genrestr

[gmx-users] Hydrophobic contact cut-off

2013-03-26 Thread Kavyashree M
Dear users, Sorry for an off-topic question.. What is the distance cut-off considered for hydrophobic contact in protein? Some paper states 4-8Ang, while some other considers only till 5Ang. It is reported that this is a long range interaction. Any information clarifying this doubt will be very

[gmx-users] chiller failure leads to truncated .cpt and _prev.cpt files using gromacs 4.6.1

2013-03-26 Thread Christopher Neale
Dear Users: A cluster that I use went down today with a chiller failure. I lost all 16 jobs (running gromacs 4.6.1). For 13 of these jobs, not only is the .cpt file truncated, but also the _prev.cpt file is truncated, meaning that I am going to have to go back through the files, extract a

[gmx-users] Hydrophobic contact cut-off

2013-03-26 Thread Christopher Neale
The standard approach in cases like this, assuming that you have some contacts at some point in your trajectory, is to use your trajectory to construct a radial distribution function (RDF) and then to define a contact as any interaction up to the minimum following the first maximum of the RDF.

Re: [gmx-users] chiller failure leads to truncated .cpt and _prev.cpt files using gromacs 4.6.1

2013-03-26 Thread Matthew Zwier
Dear Chris, While it's always possible that GROMACS can be improved (or debugged), this smells more like a system-level problem. The corrupt checkpoint files are precisely 1MiB or 2MiB, which suggests strongly either 1) GROMACS was in the middle of a buffer flush when it was killed (but the

[gmx-users] chiller failure leads to truncated .cpt and _prev.cpt files using gromacs 4.6.1

2013-03-26 Thread Christopher Neale
Dear Matthew: Thank you for noticing the file size. This is a very good lead. I had not noticed that this was special. Indeed, here is the complete listing for truncated/corrupt .cpt files: -rw-r- 1 cneale cneale 1048576 Mar 26 18:53 md3.cpt -rw-r- 1 cneale cneale 1048576 Mar 26 18:54

[gmx-users] (no subject)

2013-03-26 Thread Sathish Kumar
Hai I have done 10ns simulation for a protein to this i want to calculate DCCM map.can you please suggest me how to calculate this map. Thank You. -- gmx-users mailing listgmx-users@gromacs.org http://lists.gromacs.org/mailman/listinfo/gmx-users * Please search the archive

[gmx-users] Nose-hoover chains thermostat

2013-03-26 Thread James Starlight
Dear Gromacs Users! Could someone provide me with the tutorial example with the algoritm of ussing Nose-Hover chains thermostat. In particular It's not quite understood for me how I should define number of chains in the mdp file and how that number would affect on simulation performance (E.g In

[gmx-users] Simulation membrane proteins in amber99 force field.

2013-03-26 Thread James Starlight
Dear Gromacs users! I'd like to perform MD simulation of the membrane protein parametrized in Amber99sb force field. Could you tell me what cut-off patterns should I use for such simulation ? James -- gmx-users mailing listgmx-users@gromacs.org