[gmx-users] No such moleculetype Na

2011-12-11 Thread Setare Jiji
Hi,
Thanks for your responding.

I checked my ions.itp file in which file sodium and chlorine ions are as Na and 
Cl form.

Thus, I used genion as follows:

genion -s ions.tpr -o 1AKI_solv_ions.gro -p topol.top -nname Cl -nn 8 -pname Na

Unfortunately, I encountered same fatal error.

any help will highly appreciated.

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Re: [gmx-users] No such moleculetype Na

2011-12-11 Thread Mark Abraham

On 11/12/2011 8:17 PM, Setare Jiji wrote:

Hi,
Thanks for your responding.

I checked my ions.itp file in which file sodium and chlorine ions are 
as Na and Cl form.


Thus, I used genion as follows:

genion -s ions.tpr -o 1AKI_solv_ions.gro -p topol.top -nname Cl -nn 8 
-pname Na


Unfortunately, I encountered same fatal error.



Then you were either not looking at the right file, or not looking at 
the right name. As genion -h says, you need to use the molecule name, 
not the atom name or residue name.


Mark
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[gmx-users] coordinate number aroud the first shell

2011-12-11 Thread mohammad agha
Dear Prof.

I want to obtain the coordinate number from the first shell around my cluster, 
I want to use from integration of the 4*pi*(number density)*area(g(r)r2dr) 
until the first minimum of the RDF, but I have some questions: Please help me

1- How do I obtain the number density for special rdf? by g_density? how?
2- After this, should I compute N (coordinate number) manually?

Best Regards
Sara
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[gmx-users] trjconv -pbc mol/nojump

2011-12-11 Thread Efrat Exlrod
Hi,



I have run simulation of a large solute in a box of water. Trying to look at 
the simulation output I used trjconv with and without the -pbc nojump option.



For example:

(1)  trjconv_d -s md_100ns.tpr -f md_100ns.xtc -o md_100ns_noPBC_pbcmol.pdb 
-pbc mol -ur compact

(2)  trjconv_d -s md_100ns.tpr -f md_100ns.xtc -o md_100ns_noPBC_nojump.pdb 
-pbc nojump



With pbc=mol the solute is broken to few pieces, while the water molecules are 
placed in a box with few holes. With pbc=nojump the solute seems reasonably 
well but the water molecules are scattered in a large radius around the solute, 
and some of them are not broken (OH or H).



I tried many options of trjconv and read the 'suggested trjconv workflow' but I 
still can't obtain a reasonable complete system after the simulation.



How can I solve this problem?



Thanks, Efrat


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Re: [gmx-users] trjconv -pbc mol/nojump

2011-12-11 Thread Mark Abraham

On 11/12/2011 11:23 PM, Efrat Exlrod wrote:


Hi,

I have run simulation of a large solute in a box of water. Trying to 
look at the simulation output I used trjconv with and without the 
-pbc nojump option.


For example:

(1)  trjconv_d -s md_100ns.tpr -f md_100ns.xtc 
-o md_100ns_noPBC_pbcmol.pdb -pbc mol -ur compact


(2)  trjconv_d -s md_100ns.tpr -f md_100ns.xtc 
-o md_100ns_noPBC_nojump.pdb -pbc nojump


With pbc=mol the solute is broken to few pieces, while the water 
molecules are placed in a box with few holes. With pbc=nojump the 
solute seems reasonably well but the water molecules are scattered in 
a large radius around the solute, and some of them are not broken (OH 
or H).


I tried many options of trjconv and read the 'suggested trjconv 
workflow' but I still can't obtain a reasonable complete system after 
the simulation.


How can I solve this problem?




This is a straightforward situation where the suggested workflow works: 
remove jumps (so all molecules are whole), then center on the solute, 
and then put everything in some box (so -pbc mol, which leaves the 
centered solute where it is).


Mark
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回复: [gmx-users] No such moleculetype Na

2011-12-11 Thread yp sun
The name of ion is different when using different force field You can check 
which field force you use and find out how Na and Cl ion is written in this 
force field.

Yeping Sun
CAS Key Laboratory of Pathogenic Microbiology  Immunology
INSTITUTE OF MICROBIOLOGY CHINESE ACADEMY OF SCIENCES 
NO.1 Beichen West Road,Chaoyang District,Beijing 100101,china

--- 11年12月11日,周日, Setare Jiji jj.64fh...@yahoo.com 写道:


发件人: Setare Jiji jj.64fh...@yahoo.com
主题: [gmx-users] No such moleculetype Na
收件人: gmx-users@gromacs.org
日期: 2011年12月11日,周日,下午5:17











Hi,
Thanks for your responding.

I checked my ions.itp file in which file sodium and chlorine ions are as Na and 
Cl form.

Thus, I used genion as follows:

genion -s ions.tpr -o 1AKI_solv_ions.gro -p topol.top -nname Cl -nn 8 -pname Na

Unfortunately, I encountered same fatal error.

any help will highly appreciated.


-下面为附件内容-


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[gmx-users] trjconv -pbc mol/nojump

2011-12-11 Thread leila karami
Hi,

You should use trjconv in 2 steps:

(1)  trjconv_d -s md_100ns.tpr -f md_100ns.xtc -o
md_100ns_pbc_nojump.xtc -pbc nojump

in this step, select system for output

(2)  trjconv_d -s md_100ns.tpr -f md_100ns_pbc_nojump.xtc -o
md_100ns_pbc_mol_center.xtc -pbc mol -center

in this step, select solute for centering and system for output.

I hope it help you
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Re: 回复: [gmx-users] No such moleculetype Na

2011-12-11 Thread Mark Abraham

On 11/12/2011 11:43 PM, yp sun wrote:
The name of ion is different when using different force field You can 
check which field force you use and find out how Na and Cl ion is 
written in this force field.




The molecule name is constant over all force fields in the 4.5 series of 
GROMACS, and the molecule name is all that genion cares about. Atom and 
residue names might vary.


Mark



Yeping Sun
CAS Key Laboratory of Pathogenic Microbiology  Immunology
INSTITUTE OF MICROBIOLOGY CHINESE ACADEMY OF SCIENCES
NO.1 Beichen West Road,Chaoyang District,Beijing 100101,china

--- *11年12月11日,周日, Setare Jiji /jj.64fh...@yahoo.com/* 写道:


发件人: Setare Jiji jj.64fh...@yahoo.com
主题: [gmx-users] No such moleculetype Na
收件人: gmx-users@gromacs.org
日期: 2011年12月11日,周日,下午5:17

Hi,
Thanks for your responding.

I checked my ions.itp file in which file sodium and chlorine ions
are as Na and Cl form.

Thus, I used genion as follows:

genion -s ions.tpr -o 1AKI_solv_ions.gro -p topol.top -nname Cl
-nn 8 -pname Na

Unfortunately, I encountered same fatal error.

any help will highly appreciated.


-下面为附件内容-

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Re: [gmx-users] No such moleculetype Na

2011-12-11 Thread m_p

Did you try NA or CL.
All caps worked for me last time I used this.
Egy


On Dec 11, 2011, at 4:17 AM, Setare Jiji wrote:



Hi,
Thanks for your responding.

I checked my ions.itp file in which file sodium and chlorine ions  
are as Na and Cl form.


Thus, I used genion as follows:

genion -s ions.tpr -o 1AKI_solv_ions.gro -p topol.top -nname Cl -nn  
8 -pname Na


Unfortunately, I encountered same fatal error.

any help will highly appreciated.

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 before posting!

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RE: [gmx-users] coordinate number aroud the first shell

2011-12-11 Thread Dallas Warren
1 - number of atoms divided by size of the box.
2 - manually or via a script.  I have a script set up within Sigma Plot that I 
use for mine, but can be done in any other spreadsheet and programming language 
too.

Catch ya,

Dr. Dallas Warren
Medicinal Chemistry and Drug Action
Monash Institute of Pharmaceutical Sciences, Monash University
381 Royal Parade, Parkville VIC 3010
dallas.war...@monash.edu
+61 3 9903 9304
-
When the only tool you own is a hammer, every problem begins to resemble a nail.

From: gmx-users-boun...@gromacs.org [mailto:gmx-users-boun...@gromacs.org] On 
Behalf Of mohammad agha
Sent: Sunday, 11 December 2011 11:15 PM
To: gmx-users@gromacs.org
Subject: [gmx-users] coordinate number aroud the first shell

Dear Prof.

I want to obtain the coordinate number from the first shell around my cluster, 
I want to use from integration of the 4*pi*(number density)*area(g(r)r2dr) 
until the first minimum of the RDF, but I have some questions: Please help me
1- How do I obtain the number density for special rdf? by g_density? how?
2- After this, should I compute N (coordinate number) manually?

Best Regards
Sara
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Re: [gmx-users] coordinate number aroud the first shell

2011-12-11 Thread mohammad agha
Dear Prof.

Thank you very much for your reply.
Excuse me, I saw a figure in one article that showed the number density 
distribution for the surfactant molecules' angles for the production run. how? 
Is this as same as number density for coordinate number?how?
And some of articles with gromacs have a figure of radial density and radial 
number density and density as r(distance), I think those have been obtained 
with g_rdf, but how as a figure?  

Please help me.

Best Regards
Sara



 From: Dallas Warren dallas.war...@monash.edu
To: Discussion list for GROMACS users gmx-users@gromacs.org 
Sent: Monday, December 12, 2011 12:38 AM
Subject: RE: [gmx-users] coordinate number aroud the first shell
 

 
1 – number of atoms divided by size of the box.
2 – manually or via a script.  I have a script set up within Sigma Plot that I 
use for mine, but can be done in any other spreadsheet and programming language 
too.
 
Catch ya,

Dr. Dallas Warren
Medicinal Chemistry and Drug Action
Monash Institute of Pharmaceutical Sciences, Monash University
381 Royal Parade, Parkville VIC 3010
dallas.war...@monash.edu
+61 3 9903 9304
-
When the only tool you own is a hammer, every problem begins to resemble a nail.
 
From:gmx-users-boun...@gromacs.org [mailto:gmx-users-boun...@gromacs.org] On 
Behalf Of mohammad agha
Sent: Sunday, 11 December 2011 11:15 PM
To: gmx-users@gromacs.org
Subject: [gmx-users] coordinate number aroud the first shell
 
Dear Prof.
 
I want to obtain the coordinate number from the first shell around my cluster, 
I want to use from integration of the 4*pi*(number density)*area(g(r)r2dr) 
until the first minimum of the RDF, but I have some questions: Please help me
1- How do I obtain the number density for special rdf? by g_density? how?
2- After this, should I compute N (coordinate number) manually?
 
Best Regards
Sara
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[gmx-users] Information about g_sas

2011-12-11 Thread Alex Jemulin
Dear all
 
Which is the difference between hydropilic and hydrophobic sas?
How can give an interpretation to g_sas xvg graph?
What can I find out in it and how can use g_sas to analyze a trajectory?
 
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[gmx-users] g_hbond

2011-12-11 Thread sulatha M. S
Dear gromacs users,

I did a g_hbond -ac analysis on a 10 ns trajectory of a polycarboxylate in
water. Following is the output I obtained for the polycarboxylate H-bondign
with water

ACF 36008/36008
Normalization for c(t) = 0.00709164 for gh(t) = 7.09124e-07
Hydrogen bond thermodynamics at T = 298.15 K
Fitting parameters chi^2 = 0.000661899
Q =  0
--
Type  Rate (1/ps) Time (ps)  DG (kJ/mol)  Chi^2
Forward 0.300  3.334   7.513  0.000661899
Backward1.608  0.622   3.350
One-way 0.089 11.284  10.536
Integral0.039 25.374  12.544
Relaxation  0.062 16.080  11.413

I have read David paper (2006) on thermodynamics of H-bonding. In the paper
two delta G values are mentioned. one is the Gibbs energy of activation
(dG#) and another is the free energy of H-bonding. In the output given from
the -ac analysis, which dG values do these correspond to? I assumed dG
given for the forward rate correspond to the energy of activation. Is it
correct? What is the value for free energy of H-bonding.

Another question I have is, for a polycarboxylic acid system in water (COOH
groups as side chains) for a 10ns run, I got the following as the output
where the life time of the H-bond (between the polyacid and water) is
negative. Is this correct?

ACF 22057/22057
Normalization for c(t) = 0.0217714 for gh(t) = 4.35398e-06
Hydrogen bond thermodynamics at T = 298.15 K
Fitting parameters chi^2 =  0.0146697
Q =  0
--
Type  Rate (1/ps) Time (ps)  DG (kJ/mol)  Chi^2
Forward-0.271 -3.687-666.000   0.0146697
Backward   -2.291 -0.437-666.000
One-way 0.101  9.882  10.207
Integral0.034 29.376  12.907
Relaxation  0.063 15.803  11.370


Thankyou for any help,

Dr. M. S. Sulatha
Dept. of Chemical Engineering
IIT-Madras
India
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[gmx-users] Gromacs Installation error

2011-12-11 Thread aiswarya pawar
Hi gromacs users,

Iam trying to install gromacs on IBM cluster. I have successfully installed
installed fftw-3.3 version with commands=

./configure --enable-threads --enable-float
make
make install

the set the enviroment=

setenv CPPFLAGS -I/home/fftw/include
setenv LDFLAGS -L/home/fftw/lib

Then the gromacs installation=

./configure --prefix=/home/gromacs --host=ppc --build=ppc64
--enable-mpi --with-fft=fftw3 MPICC=mpCC CC=xlC_r -q64 CFLAGS=-O3
-qarch=ppc64 -qtune=auto CXX=xlC_r -q64 CXXFLAGS=-O3 -qarch=ppc64
-qtune=auto F77=mpixlf_r FFLAGS=-O3 -qarch=ppc64 -qtune=auto

the configure did well but while doing make mdrun i started getting
error such as=

source='vmdio.c' object='vmdio.lo' libtool=yes \
DEPDIR=.deps depmode=none /bin/sh ../../config/depcomp \
/bin/sh ../../libtool --tag=CC   --mode=compile mpCC -DHAVE_CONFIG_H
-I. -I../../src  -I../../include
-DGMXLIBDIR=\/home/gromacs/share/top\ -I/home/include  -O3
-qarch=ppc64 -qtune=auto -c -o vmdio.lo vmdio.c
 mpCC -DHAVE_CONFIG_H -I. -I../../src -I../../include
-DGMXLIBDIR=\/home/gromacs/share/top\ -I/home/include -O3
-qarch=ppc64 -qtune=auto -c vmdio.c -o vmdio.o
1506-503 (W) Option -qlongdouble / -qldbl128 is not supported for
LINUX for Power.
/usr/include/glob.h, line 166.34: 1506-276 (S) Syntax error:
possible missing identifier?
/usr/include/glob.h, line 166.12: 1506-033 (S) Function
__REDIRECT_NTH is not valid. Function cannot return a function.
/usr/include/glob.h, line 166.12: 1506-282 (S) The type of the
parameters must be specified in a prototype.
/usr/include/glob.h, line 169.35: 1506-334 (S) Identifier glob_t has
already been defined on line 113 of /usr/include/glob.h.
/usr/include/glob.h, line 169.42: 1506-277 (S) Syntax error:
possible missing ';' or ','?
/usr/include/glob.h, line 171.39: 1506-276 (S) Syntax error:
possible missing identifier?
/usr/include/glob.h, line 171.13: 1506-282 (S) The type of the
parameters must be specified in a prototype.
/usr/include/glob.h, line 171.13: 1506-343 (S) Redeclaration of
__REDIRECT_NTH differs from previous declaration on line 166 of
/usr/include/glob.h.
/usr/include/glob.h, line 171.13: 1506-050 (I) Return type void in
redeclaration is not compatible with the previous return type
int(const char*,int).
/usr/include/glob.h, line 171.58: 1506-160 (S) Object globfree64
cannot be declared as type void.
/usr/include/glob.h, line 175.12: 1506-343 (S) Redeclaration of
glob64 differs from previous declaration on line 169 of
/usr/include/glob.h.
/usr/include/glob.h, line 175.12: 1506-382 (I) The type int(const
char* restrict,int,int(*)(const char*,int),struct {...}* restrict) of
identifier glob64 differs from previous type int.
make[2]: *** [vmdio.lo] Error 1
make[2]: Leaving directory `/home/gromacs-4.5.5/src/gmxlib'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/gromacs-4.5.5/src/gmxlib'
(cd ./src/mdlib  make ; exit 0)
make[1]: Entering directory `/home/gromacs-4.5.5/src/mdlib'
make[1]: *** No rule to make target `../gmxlib/libgmx_mpi.la', needed
by `libmd_mpi.la'.  Stop.
make[1]: Leaving directory `/home/gromacs-4.5.5/src/mdlib'
(cd ./src/kernel  make mdrun ; exit 0)
make[1]: Entering directory `/home/gromacs-4.5.5/src/kernel'
/bin/sh ../../libtool --tag=CC   --mode=link mpCC  -O3 -qarch=ppc64
-qtune=auto -no-undefined -version-info 6:0:0
-L/home/staff/sec/secdpal/soft/lib  -o libgmxpreprocess_mpi.la -rpath
/home/gromacs/lib add_par.lo compute_io.lo convparm.lo fflibutil.lo
gen_ad.lo gen_vsite.lo genhydro.lo gpp_atomtype.lo
gpp_bond_atomtype.lo h_db.lo hackblock.lo hizzie.lo pdb2top.lo
pgutil.lo readir.lo readpull.lo resall.lo sorting.lo specbond.lo
ter_db.lo tomorse.lo topdirs.lo topexcl.lo topio.lo toppush.lo
topshake.lo toputil.lo tpbcmp.lo vsite_parm.lo xlate.lo
../mdlib/libmd_mpi.la -lnsl -lm
libtool: link: cannot find the library `../mdlib/libmd_mpi.la' or
unhandled argument `../mdlib/libmd_mpi.la'
make[1]: *** [libgmxpreprocess_mpi.la] Error 1
make[1]: Leaving directory `/home/gromacs-4.5.5/src/kernel'

please help!

Aiswarya
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Re: [gmx-users] g_hbond

2011-12-11 Thread David van der Spoel

On 2011-12-12 07:41, sulatha M. S wrote:

Dear gromacs users,

I did a g_hbond -ac analysis on a 10 ns trajectory of a polycarboxylate
in water. Following is the output I obtained for the polycarboxylate
H-bondign with water

ACF 36008/36008
Normalization for c(t) = 0.00709164 for gh(t) = 7.09124e-07
Hydrogen bond thermodynamics at T = 298.15 K
Fitting parameters chi^2 = 0.000661899
Q =  0
--
Type  Rate (1/ps) Time (ps)  DG (kJ/mol)  Chi^2
Forward 0.300  3.334   7.513  0.000661899
Backward1.608  0.622   3.350
One-way 0.089 11.284  10.536
Integral0.039 25.374  12.544
Relaxation  0.062 16.080  11.413

I have read David paper (2006) on thermodynamics of H-bonding. In the
paper two delta G values are mentioned. one is the Gibbs energy of
activation (dG#) and another is the free energy of H-bonding. In the
output given from the -ac analysis, which dG values do these correspond
to? I assumed dG given for the forward rate correspond to the energy of
activation. Is it correct? What is the value for free energy of H-bonding.

Yes it is DGact.
The DGeq follows from the fraction of COOH that are not forming hydrogen 
bonds, option -nhbdist.




Another question I have is, for a polycarboxylic acid system in water
(COOH groups as side chains) for a 10ns run, I got the following as the
output where the life time of the H-bond (between the polyacid and
water) is negative. Is this correct?
This means that the ACF has not equilibrated and you need much longer 
sims. You probably got a warning about it.




ACF 22057/22057
Normalization for c(t) = 0.0217714 for gh(t) = 4.35398e-06
Hydrogen bond thermodynamics at T = 298.15 K
Fitting parameters chi^2 =  0.0146697
Q =  0
--
Type  Rate (1/ps) Time (ps)  DG (kJ/mol)  Chi^2
Forward-0.271 -3.687-666.000   0.0146697
Backward   -2.291 -0.437-666.000
One-way 0.101  9.882  10.207
Integral0.034 29.376  12.907
Relaxation  0.063 15.803  11.370


Thankyou for any help,

Dr. M. S. Sulatha
Dept. of Chemical Engineering
IIT-Madras
India





--
David van der Spoel, Ph.D., Professor of Biology
Dept. of Cell  Molec. Biol., Uppsala University.
Box 596, 75124 Uppsala, Sweden. Phone:  +46184714205.
sp...@xray.bmc.uu.sehttp://folding.bmc.uu.se
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