Francesco Pietra wrote:
Look at the .mdp file. You will find Non-Protein somewhere.
The .mdp I used is not from a tutorial; it is the general purpose - or
standard - mdp provided by Martini. It doe not contain the word
"protein"
The "protein-in-vacuum.mdp from the ubiquitin CG tutoria does contain
both "Protein" and "Non-Protein" words. deleting "Non-Protein", the
error from running grompp is:
Fatal error:
Invalid T coupling input: 1 groups, 2 ref_t values and 2 tau_t values
This comes up because you've defined one group now for T-coupling and assigned
coupling constants and temperatures for two. Haphazard changes to .mdp files
will certainly generate these errors. Deleting until the problem goes away
never works - it only creates more problems :)
Please see the manual for proper use of tc-grps, etc.
I'll settle the matter until I can generate ideas, or be less tired to
check again for the presence of that mysterious non-protein. The real
protein contains chloride ion ligands. I have cleared from them before
starting with CG and anyway no trace of cl CL Cl.
So that has nothing to do with it.
Hope to be able to come again here with a solution of this affair.
The best advice - don't blindly use some .mdp file you find because it works
for a tutorial. Read it, read the manual, and make changes based on what
you actually have in your system.
I fully agree. Using "protein-in-vacuum.mdp", although attractive
because of "vacuum", was a bold adventure. But the standard mdp I used
before is declared to be standard, and my protein is standard. As I
said, I'll work hard to come out but before I'll take a few days
wandering with my Brittany on the Alps. The Tetraonidae will refresh
my mind.
What is "standard" for one user is not necessarily "standard" for another. You
must almost always make changes to suit your particular system, as a general rule.
Thanks for all you did for me (for us)
You're welcome. Hopefully everything works out.
-Justin
francesco
-Justin
thanks
francesco
PS: the protein CG file contains TER lines separating the subunits,
but the CG .gro file has no TER.
-Justin
;
; mod21 | MARTINI 2.1
;
; Include force field poarameters containing all particle definitions,
; the interaction matrix, plus the topology for water.
#include "martini_v2.1.itp"
; Then include the file(s) containing the topologies of other
; molecules present in your system.
; #include "martini_v2.0_lipids.itp"
; #include "martini_v2.0_salt.itp"
#include "mod21.itp"
; Define a name for your system
[ system ]
mod21
; Define the composition of your system
; The molecule names should correspond to those defined in the itp
file(s).
[ molecules ]
Protein 1
; DPPC 128
; W 2000
; NA+ 20
; CL- 20
It seems that commenting out ";" is placed correctly.
I am sincerely sorry to bother you again.
francesco
With command
$ grompp -np 4 -f mod21.cg.mdp -c mod21.cg.box.gro -p mod21.cg.top -n
-o mod21.cg.tpr
NOTE:
System has non-zero total charge: -5.000000e+01
processing coordinates...
Warning: atom names in mod21.cg.top and mod21.cg.box.gro don't match
(BCQd - BN0)
Warning: atom names in mod21.cg.top and mod21.cg.box.gro don't match
(SCAC1 - SC1)
Warning: atom names in mod21.cg.top and mod21.cg.box.gro don't match
(BCP5 - BN0)
Warning: atom names in mod21.cg.top and mod21.cg.box.gro don't match
(SCP1 - SC1)
Warning: atom names in mod21.cg.top and mod21.cg.box.gro don't match
(BSP5 - BN0)
Warning: atom names in mod21.cg.top and mod21.cg.box.gro don't match
(SSAC1 - SC1)
Warning: atom names in mod21.cg.top and mod21.cg.box.gro don't match
(BCP5 - BN0)
Warning: atom names in mod21.cg.top and mod21.cg.box.gro don't match
(SCC3 - SC1)
Warning: atom names in mod21.cg.top and mod21.cg.box.gro don't match
(SCQd - SC2)
Warning: atom names in mod21.cg.top and mod21.cg.box.gro don't match
(BCP5 - BN0)
Warning: atom names in mod21.cg.top and mod21.cg.box.gro don't match
(SCN0 - SC1)
Warning: atom names in mod21.cg.top and mod21.cg.box.gro don't match
(SCQd - SC2)
Warning: atom names in mod21.cg.top and mod21.cg.box.gro don't match
(BHN0 - BN0)
Warning: atom names in mod21.cg.top and mod21.cg.box.gro don't match
(BHNd - BN0)
Warning: atom names in mod21.cg.top and mod21.cg.box.gro don't match
(SHAC1 - SC1)
Warning: atom names in mod21.cg.top and mod21.cg.box.gro don't match
(BHNd - BN0)
Warning: atom names in mod21.cg.top and mod21.cg.box.gro don't match
(SHSC4 - SC2)
Warning: atom names in mod21.cg.top and mod21.cg.box.gro don't match
(SHSP1 - SC1)
Warning: atom names in mod21.cg.top and mod21.cg.box.gro don't match
(SHSC4 - SC3)
Warning: atom names in mod21.cg.top and mod21.cg.box.gro don't match
(SHSC4 - SC4)
(more than 20 non-matching atom names)
WARNING 2 [file "mod21.cg.top", line 28]:
2875 non-matching atom names
atom names from mod21.cg.top will be used
atom names from mod21.cg.box.gro will be ignored
double-checking input for internal consistency...
renumbering atomtypes...
converting bonded parameters...
# BONDS: 2724
# G96ANGLES: 2860
# PDIHS: 328
# IDIHS: 187
# CONSTR: 745
Walking down the molecule graph to make shake-blocks
initialising group options...
processing index file...
-------------------------------------------------------
Program grompp, VERSION 3.3.3
Source code file: ../../../../src/gmxlib/futil.c, line: 345
File input/output error:
index.ndx
==========
Non-matching because of the many -S-S- bonds? Why asking about
index.ndx?
Non-matching names occur because MARTINI doesn't assign them correctly
in
the initial system setup. Using the .top names is fine.
The I/O error comes from the fact that you have passed the -n flag to
grompp
without having index.ndx in the working directory. Note that having an
index file doesn't necessarily solve your problem; the warning is
printed
in
case you have non-default groups for, e.g., T-coupling or energygrps.
If
you have a "moleculetype not found," then you haven't #included the
.itp
file and an index file won't save you.
-Justin
Thanks for help
francesco
On Mon, Oct 5, 2009 at 12:33 PM, Justin A. Lemkul <jalem...@vt.edu>
wrote:
Francesco Pietra wrote:
Hi:
As I found it difficult to manage solvation - the way I would like -
with a pore protein (a trimer) partly immersed into a bilayer, I
started with the protein alone in vacuum, in order to try to fix the
problems step-by-step. Unfortunately, I can't fix simple problems
with
grompp.
1) Generated mod21.itp from mod21.pdb
2) Generated mod21.cg.pdb with awk script)
3) editconf -f mod21.cg.pdb -o mod21.cg.gro
4) genbox -cp mod21.cg.gro -box 10 17 10 -o mod21.cg.box.gro
5) grompp -np 4 -f mod21.cg.box.mdp -c mod21.cg.box.gro -p
mod21.cg.box.top -warnmax 10
Error: no such moleculetype Protein.
.............................
.mdp is merely a renamed martini_v2.0.example.mdp, taking care that
"cpp = /usr/bin/cpp".
.top was from editing martini_v2.0.example.top and reads (in between
===):
======
;
; mod21 | MARTINI 2.1
;
; Include force field parameters containing all particle
definitions,
; the interaction matrix, plus the topology for water.
#include "martini_v2.1.itp"
; Then include the file(s) containing the topologies of other
; molecules present in your system.
; #include "martini_v2.0_lipids.itp"
; #include "martini_v2.0_salt.itp"
#include mod21.itp
This #include statement has the wrong syntax. See any of the above
for
the
correct way to do it.
-Justin
--
========================================
Justin A. Lemkul
Ph.D. Candidate
ICTAS Doctoral Scholar
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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--
========================================
Justin A. Lemkul
Ph.D. Candidate
ICTAS Doctoral Scholar
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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Please search the archive at http://www.gromacs.org/search before
posting!
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interface
or send it to gmx-users-requ...@gromacs.org.
Can't post? Read http://www.gromacs.org/mailing_lists/users.php
--
========================================
Justin A. Lemkul
Ph.D. Candidate
ICTAS Doctoral Scholar
Department of Biochemistry
Virginia Tech
Blacksburg, VA
jalemkul[at]vt.edu | (540) 231-9080
http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin
========================================
_______________________________________________
gmx-users mailing list gmx-users@gromacs.org
http://lists.gromacs.org/mailman/listinfo/gmx-users
Please search the archive at http://www.gromacs.org/search before
posting!
Please don't post (un)subscribe requests to the list. Use the www
interface
or send it to gmx-users-requ...@gromacs.org.
Can't post? Read http://www.gromacs.org/mailing_lists/users.php
--
========================================
Justin A. Lemkul
Ph.D. Candidate
ICTAS Doctoral Scholar
Department of Biochemistry
Virginia Tech
Blacksburg, VA
jalemkul[at]vt.edu | (540) 231-9080
http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin
========================================
_______________________________________________
gmx-users mailing list gmx-users@gromacs.org
http://lists.gromacs.org/mailman/listinfo/gmx-users
Please search the archive at http://www.gromacs.org/search before posting!
Please don't post (un)subscribe requests to the list. Use the www interface
or send it to gmx-users-requ...@gromacs.org.
Can't post? Read http://www.gromacs.org/mailing_lists/users.php
--
========================================
Justin A. Lemkul
Ph.D. Candidate
ICTAS Doctoral Scholar
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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