On 6/20/16 2:32 PM, Kyle Titus-Glover wrote:
Hey everyone,
I've been working on the Justin Lemkul's 2nd tutorial and just can't seem
to get past 2. packing the lipids around the protein and 3. solvating with
water. The follow the instructions step by step but for some reason as I
try to run EM with
gmx grompp -f minim.mdp -c system_shrink1.gro -p topol.top -o em1.tp
I get hit with this error:
Fatal error:
number of coordinates in coordinate file (system_shrink1.gro, 6400)
does not match topology (topol.top, 6438)
6400 is the number of atoms in the 128-lipid DPPC bilayer (128 * 50 = 6400) so
something has gone badly wrong here. Your coordinate file at this point should
have the peptide and 126 lipids; the InflateGRO output below looks correct.
Check the contents of system_shrink1.gro and make sure you haven't perhaps
accidentally renamed a file something that it shouldn't be.
-Justin
I figured that since my number of molecules were off that the problem was
either the way I updated the molecules section of my topol.top fill by
adding
DPPC 126
after seeing this when adding lipids:
There are 128 lipids...
with 50 atoms per lipid..
Determining upper and lower leaflet...
64 lipids in the upper...
64 lipids in the lower leaflet
Centering protein....
Checking for overlap....
...this might actually take a while....
100 % done...
There are 2 lipids within cut-off range...
1 will be removed from the upper leaflet...
1 will be removed from the lower leaflet...
But for some reason I can't seem to start the EM iterations because of this
error.
Sincerely,
Kyle Titus-Glover
Virginia Tech '17 | Engineering Science & Mechanics
Dean's Research Assistant, College of Engineering
443-802-4058
--
==================================================
Justin A. Lemkul, Ph.D.
Ruth L. Kirschstein NRSA Postdoctoral Fellow
Department of Pharmaceutical Sciences
School of Pharmacy
Health Sciences Facility II, Room 629
University of Maryland, Baltimore
20 Penn St.
Baltimore, MD 21201
jalem...@outerbanks.umaryland.edu | (410) 706-7441
http://mackerell.umaryland.edu/~jalemkul
==================================================
--
Gromacs Users mailing list
* Please search the archive at
http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting!
* Can't post? Read http://www.gromacs.org/Support/Mailing_Lists
* For (un)subscribe requests visit
https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a
mail to gmx-users-requ...@gromacs.org.
