On 6/26/13 9:32 AM, aixintiankong wrote:
Dear，
when i keep the ligand in the active site, I use the g_dist calculate
the distance of two residues from two different loops. i look the sticks model
of the two residues by pymol and find that there is a gap between the two
residues. after using g_dist calculate the distance, i look the distance.xvg
file and find that the |d|=0. why? In the pymol i can look the gap, but the
distance.xvg show the |d|=0.
Have you verified that your index groups actually specify what you think they
do?
when i remove the ligand and get the md.xtc, i calculate the distance
between the two residues the |d|>1nm.
so i think the ligand can control the Channels opend, this is right or not ?
You have a potentially unreliable measurement involved, so I would not conclude
anything. Beyond that, interpretation of the outcome is your task, based on
your knowledge of the literature and the system at hand.
And i only want to show teh |d| lines in the distance.xvg, how can i carry
out it ?
That's the default behavior when plotting in XmGrace. You only get multiple
sets plotted with the -nxy option.
-Justin
--
========================================
Justin A. Lemkul, Ph.D.
Research Scientist
Department of Biochemistry
Virginia Tech
Blacksburg, VA
jalemkul[at]vt.edu | (540) 231-9080
http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin
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