From: annalisa_at_biotec.tu-dresden.de
Date: Tue Nov 21 2006 - 15:06:50 CST

Hi all,
I am trying to run a simulation of rhodopsin in membrane.
After building the membrane and inserting the protein into the membrane
I saved both coordinates of membrane and protein.
When I run the combine.tcl script I get the following error messages in
the log file (my suspicion is that this has something to do with vmd
version that I use, that is vmd 1.8.4):

Info) VMD for LINUX, version 1.8.4a22 (October 11, 2005)
Info) http://www.ks.uiuc.edu/Research/vmd/
Info) Email questions and bug reports to vmd_at_ks.uiuc.edu
Info) Please include this reference in published work using VMD:
Info) Humphrey, W., Dalke, A. and Schulten, K., `VMD - Visual
Info) Molecular Dynamics', J. Molec. Graphics 1996, 14.1, 33-38.
Info) -------------------------------------------------------------
Info) Multithreading available, 2 CPUs detected.
on
1.4.3
reading topology file /home/bioinf/annalisa/Rhodopsin_simul/top27rodlip.inp

>>>>>> Combined CHARMM All-Hydrogen Topology File for <<<<<<<<<
>>>>>>>>> CHARMM22 Proteins and CHARMM27 Lipids <<<<<<<<<<
from
>>>>>>>>CHARMM22 All-Hydrogen Topology File for Proteins <<<<<<
>>>>>>>>>>>>>>>>>>>>> August 1999 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<
>>>>>>> Direct comments to Alexander D. MacKerell Jr. <<<<<<<<<
>>>>>> 410-706-7442 or email: alex,mmiris.ab.umd.edu <<<<<<<<<
and
  \\\\\\\ CHARMM27 All-Hydrogen Lipid Topology File ///////
  \\\\\\\\\\\\\\\\\\ Developmental /////////////////////////
              Alexander D. MacKerell Jr.
                     August 1999
 All comments to ADM jr. email: alex,mmiris.ab.umd.edu
              telephone: 410-706-7442

Created by CHARMM version 27 1
*ERROR! Explicit exclustions not supported, atom ignored.
ERROR! Explicit exclustions not supported, atom ignored.*
reading topology file /home/bioinf/annalisa/Rhodopsin_simul/retinal_top.inp

Created by CHARMM version 22 1
reading structure from psf file
/home/bioinf/annalisa/Rhodopsin_simul/membrane.psf

reading coordinates from pdb file
/home/bioinf/annalisa/Rhodopsin_simul/membrane.pdb
reading structure from psf file
/home/bioinf/annalisa/Rhodopsin_simul/1u19_new.psf

reading coordinates from pdb file
/home/bioinf/annalisa/Rhodopsin_simul/1u19_new_new.pdb

temp
Info: writing psf file temp.psf
total of 43415 atoms
total of 40516 bonds
total of 68271 angles
total of 92122 dihedrals
total of 2112 impropers
Info: psf file complete.
Info: writing pdb file temp.pdb
Info: pdb file complete.
Info) Using plugin pdb for structure file temp.pdb
Info) Using plugin pdb for coordinates from file temp.pdb
Info) Determining bond structure from distance search ...
*ERROR) MolAtom 32514: Exceeded maximum number of bonds (8).
ERROR) MolAtom 10278: Exceeded maximum number of bonds (8).
ERROR) MolAtom 5363: Exceeded maximum number of bonds (8).
ERROR) MolAtom 42101: Exceeded maximum number of bonds (8).
ERROR) MolAtom 6837: Exceeded maximum number of bonds (8).
ERROR) MolAtom 40429: Exceeded maximum number of bonds (8).
ERROR) MolAtom 18336: Exceeded maximum number of bonds (8).
ERROR) MolAtom 40723: Exceeded maximum number of bonds (8).
ERROR) MolAtom 35120: Exceeded maximum number of bonds (8).
ERROR) MolAtom 40723: Exceeded maximum number of bonds (8).
ERROR) MolAtom 19808: Exceeded maximum number of bonds (8).
ERROR) MolAtom 19806: Exceeded maximum number of bonds (8).
ERROR) MolAtom 18336: Exceeded maximum number of bonds (8).
ERROR) MolAtom 6165: Exceeded maximum number of bonds (8).
ERROR) MolAtom 7003: Exceeded maximum number of bonds (8).
ERROR) MolAtom 19956: Exceeded maximum number of bonds (8).
ERROR) MolAtom 19177: Exceeded maximum number of bonds (8).
ERROR) MolAtom 20747: Exceeded maximum number of bonds (8).
ERROR) MolAtom 5497: Exceeded maximum number of bonds (8).
ERROR) MolAtom 6300: Exceeded maximum number of bonds (8).
ERROR) MolAtom 33660: Exceeded maximum number of bonds (8).
ERROR) MolAtom 19270: Exceeded maximum number of bonds (8).
ERROR) MolAtom 39303: Exceeded maximum number of bonds (8).
ERROR) MolAtom 20361: Exceeded maximum number of bonds (8).
ERROR) MolAtom 7523: Exceeded maximum number of bonds (8).
ERROR) BaseMolecule: Excessive bonding errors encountered, perhaps atom
coordinates are in the wrong units?
ERROR) BaseMolecule: Silencing bonding error messages.*
Info) Finished with coordinate file temp.pdb.
Info) Analyzing structure ...
Info) Atoms: 43415
Info) Bonds: 56999
Info) Residues: 4070
Info) Waters: 2893
*ERROR) Residue exceeded maximum number of bonds (4).
ERROR) Residue exceeded maximum number of bonds (4).
ERROR) Residue exceeded maximum number of bonds (4).
ERROR) Residue exceeded maximum number of bonds (4).
ERROR) Residue exceeded maximum number of bonds (4).
ERROR) Residue exceeded maximum number of bonds (4).
ERROR) Residue exceeded maximum number of bonds (4).
ERROR) Residue exceeded maximum number of bonds (4).
*

I have no clue how to handle these errors. Any suggestion or help is
really appreciated!!
Thanks
Annalisa