[gmx-users] Fatal error: Bond atom type names can't be single digits

2012-04-17 Thread Sangita Kachhap

Hello all

I am new for gromacs. I have to do MD simulation of membrane protein docked with
organic molecule.
I have gerated top and itp for ligand using PRODRG server also generated top
file for complex.
But when I am generating .tpr file for a POPC system using grompp getting an 
error:

creating statusfile for 1 node...
checking input for internal consistency...
calling /lib/cpp...
processing topology...
Cleaning up temporary file gromppWQnjOb
Fatal error: Bond atom type names can't be single digits.

I am using gromacs-4.5.5

Can someone help me to find out where is actually problem is occuring?

With regards
Sangita Kachhap
SRF
BIC,IMTECH
CHANDIGARH

__
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Institute of Microbial Technology (A CONSTITUENT ESTABLISHMENT OF CSIR)
सैक्टर 39 ए, चण्डीगढ़ / Sector 39-A, Chandigarh
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Re: [gmx-users] Fatal error: Bond atom type names can't be single digits

2012-04-17 Thread Justin A. Lemkul



Sangita Kachhap wrote:

Hello all

I am new for gromacs. I have to do MD simulation of membrane protein docked with
organic molecule.
I have gerated top and itp for ligand using PRODRG server also generated top
file for complex.


Hopefully you're not relying on an unrefined PRODRG topology.  See the article 
linked from:


http://www.gromacs.org/Downloads/Related_Software/PRODRG#Tips


But when I am generating .tpr file for a POPC system using grompp getting an 
error:

creating statusfile for 1 node...
checking input for internal consistency...
calling /lib/cpp...
processing topology...
Cleaning up temporary file gromppWQnjOb
Fatal error: Bond atom type names can't be single digits.

I am using gromacs-4.5.5

Can someone help me to find out where is actually problem is occuring?



It would help to see the topology, but based on a guess I would say that the 
error is pretty explicit that you have atom types that are not appropriately 
named; they are digits.  Atom types can utilize numbers, but only as a part of 
the name.  For instance, CH3 is a valid atom type, but 3 is not.


-Justin

--


Justin A. Lemkul
Ph.D. Candidate
ICTAS Doctoral Scholar
MILES-IGERT Trainee
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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