Re: [gmx-users] Re: Folding rate

2011-12-30 Thread KS Rotondi
gupta wrote: Thanks for your advice... Could you please refer me some papers regarding this On Sat, Dec 31, 2011 at 8:17 AM, KS Rotondi wrote: No, there is no way to use such data to determine the folding rate of the intact protein. If you used a fragment approach you could potent

Re: [gmx-users] Re: Folding rate

2011-12-30 Thread KS Rotondi
Dear Bharat, 20 residue peptides in general don't fold, they inhabit a conformational space. Can you determine the fraction of time spent in a near native (as defined by you) conformation under given conditions to within the ability of the force field, yes, you can. To calculate a true ra

Re: [gmx-users] Re: Folding rate

2011-12-30 Thread KS Rotondi
No, there is no way to use such data to determine the folding rate of the intact protein. If you used a fragment approach you could potentially (read lots of papers on REMD) isolate nucleation sites, but minus the tertiary interaction scheme you could not tell a compelling story. Now, if yo

Re: [gmx-users] How to obtain structures with large RMSD?

2011-10-10 Thread KS Rotondi
you either A) Have not been sampling long enough or B) Just might have your answer... On Oct 10, 2011, at 11:46 AM, Liu, Liang wrote: Well, the thing is even I turn off the position restraint and raise the temperature to 600k, the RMSD I can obtained is only about 0.3 for a RNA hairpin. -

Re: [gmx-users] (no subject)

2011-07-15 Thread KS Rotondi
thumbs up per tuti On Jul 15, 2011, at 6:23 PM, Justin A. Lemkul wrote: Sara baretller wrote: between 2.2 and 2.7 M. Well, double check your work. Your previous post contained several units that made no sense, so I don't know if you've done the calculations correctly. For adding ions,

Re: [gmx-users] PBS script

2010-09-12 Thread KS Rotondi
complete commitment to help on Justin's part. KSR On Sep 12, 2010, at 6:27 PM, KS Rotondi wrote: it must be hard to do your own research On Sep 12, 2010, at 5:52 PM, manoj singh wrote: Thanks for reminding me the existence of Google. It must be hard to copy and paste few lines of the PBS s

Re: [gmx-users] PBS script

2010-09-12 Thread KS Rotondi
it must be hard to do your own research On Sep 12, 2010, at 5:52 PM, manoj singh wrote: Thanks for reminding me the existence of Google. It must be hard to copy and paste few lines of the PBS script than advertising the Google. On Sun, Sep 12, 2010 at 5:23 PM, Justin A. Lemkul wrote: m

Re: [gmx-users] Epsilon AA, Epsilon AB, Epsilon BB

2010-08-24 Thread KS Rotondi
The link takes me to the Tab Potentials page, but using the latest Firefox with Mac OS 10.5.8 there are gaps in the text but no functions shown at the top of the page. E.g. generic form is: several blank lines, LJ form is: even more blank lines, etc. On Aug 24, 2010, at 3:48 PM, Justin A

Re: [gmx-users] Normal Mode analysis

2010-02-20 Thread KS Rotondi
I'm joining the tautology society as well... : ) The by-line is, "if we get 100,000 members, we'll have 100,000 members..." On Feb 20, 2010, at 4:28 PM, Tsjerk Wassenaar wrote: Aside from that, search the literature; published papers should have reproducible methodology :) And.., methodology

Re: [gmx-users] global or local minimum

2010-01-24 Thread KS Rotondi
This question came up a few weeks ago. The simple answer is, you can be pretty sure you're at the bottom of some potential energy surface but you can't know if you're at a local or global minimum. However, if you are using an experimentally determined protein structure, and the structure

Re: [gmx-users] dssp install problems

2009-04-03 Thread KS Rotondi
Many thanks to Mr. Lemkul and Mr. Rodrigues, their solution was, as they say, the ticket. Ken On Apr 3, 2009, at 1:57 PM, Justin A. Lemkul wrote: KS Rotondi wrote: All, I've looked at the site and cannot figure this out, so apologies if this is a painful often seen question. I

[gmx-users] dssp install problems

2009-04-03 Thread KS Rotondi
All, I've looked at the site and cannot figure this out, so apologies if this is a painful often seen question. I'm trying to install dssp for use with do_dssp on an OSX.5 PPC system with the following steps, in the dssp folder: ./DsspCompileCC cd.. sudo mv dssp /usr/local cd /usr/loca

[gmx-users] grompp vel_gen = seg fault

2009-03-22 Thread KS Rotondi
Dearest All, I'm experiencing strange behavior running Gromacs 4.0.2 on dual G5 macintoshs (OS 10.4.11) in my college's computer laboratory. When I use the attached .mdp file, grompp ends in a seg fault, however if I remove the last 3 lines (controlling velocity generation) grompp runs n