[gmx-users] Error: number of atoms do not match

Justin A. Lemkul jalemkul at vt.edu
Thu Jul 10 20:27:13 CEST 2008


h a wrote:

> *****************
> 
> Now I'm actually studying protein polymer_surface interactions, using 
> g43a1 forcefield . Can anybody explain whether should I use polymer 
> model with only polar hydrogens or polymer model with all hydrogens ? 
> What is the significance of these hydrogens.

I would suggest reading the papers that correspond to the Gromos96 force fields,
and united-atom force fields in general.

In addition to the original papers, see here (some references are included):

http://wiki.gromacs.org/index.php/GROMOS

-Justin

> In the .itp file(shown below) there are 130 atoms but total number of 
> atoms in only polar hydrogens model is 80 same with no hydrogens model. 
> Including all hydrogens I have 162 atoms. So what does this 130 
> correspond to ?? ( actually I'm facing fatal error because of this 
> consistency in number of atoms while doing EM )
> *******
> [ atoms ]
> ;   nr      type  resnr resid  atom  cgnr   charge     mass
>      1       CR1     1  STY     CAB     1   -0.006  12.0110  
>      2        HC     1  STY     HAB     1    0.006   1.0080  
>      3       CR1     1  STY     CAC     2   -0.016  12.0110  
>      4        HC     1  STY     HAC     2    0.002   1.0080  
>      5       CR1     1  STY     CAD     2   -0.017  12.0110  
>      6        HC     1  STY     HAD     2    0.002   1.0080  
>      7       CR1     1  STY     CAE     2   -0.017  12.0110  
>      8        HC     1  STY     HAE     2    0.002   1.0080  
>      9       CR1     1  STY     CAF     2   -0.017  12.0110  
>     10        HC     1  STY     HAF     2    0.002   1.0080  
>     11         C     1  STY     CAA     2   -0.025  12.0110  
>     12       CH1     1  STY     CAG     2    0.067  13.0190  
>     13       CH3     1  STY     CAH     2    0.017  15.0350  
>     14       CH2     1  STY     CAP     3    0.000  14.0270  
>     15       CH1     1  STY     CAO     4    0.060  13.0190  
>     16         C     1  STY     CAI     4   -0.027  12.0110  
>     17       CR1     1  STY     CAJ     4   -0.018  12.0110  
>     18        HC     1  STY     HAK     4    0.001   1.0080  
>     19       CR1     1  STY     CAK     4   -0.018  12.0110  
>     20        HC     1  STY     HAL     4    0.002   1.0080  
>     21       CR1     1  STY     CAL     5   -0.016  12.0110  
>     22        HC     1  STY     HAM     5    0.003   1.0080  
>     23       CR1     1  STY     CAM     5   -0.016  12.0110  
>     24        HC     1  STY     HAN     5    0.003   1.0080  
>     25       CR1     1  STY     CAN     5   -0.016  12.0110  
>     26        HC     1  STY     HAO     5    0.003   1.0080  
>     27       CH2     1  STY     CAX     5    0.039  14.0270  
>     28       CH1     1  STY     CAW     6    0.060  13.0190  
>     29         C     1  STY     CAQ     6   -0.027  12.0110  
>     30       CR1     1  STY     CAR     6   -0.018  12.0110  
>     31        HC     1  STY     HAS     6    0.001   1.0080  
>     32       CR1     1  STY     CAS     6   -0.018  12.0110  
>     33        HC     1  STY     HAT     6    0.002   1.0080  
>     34       CR1     1  STY     CAT     7   -0.016  12.0110  
>     35        HC     1  STY     HAU     7    0.003   1.0080  
>     36       CR1     1  STY     CAU     7   -0.016  12.0110  
>     37        HC     1  STY     HAV     7    0.003   1.0080  
>     38       CR1     1  STY     CAV     7   -0.016  12.0110  
>     39        HC     1  STY     HAW     7    0.003   1.0080  
>     40       CH2     1  STY     CBF     7    0.039  14.0270  
>     41       CH1     1  STY     CBE     8    0.060  13.0190  
>     42         C     1  STY     CAY     8   -0.027  12.0110  
>     43       CR1     1  STY     CAZ     8   -0.018  12.0110  
>     44        HC     1  STY     HA0     8    0.001   1.0080  
>     45       CR1     1  STY     CBA     8   -0.018  12.0110  
>     46        HC     1  STY     HBA     8    0.002   1.0080  
>     47       CR1     1  STY     CBB     9   -0.016  12.0110  
>     48        HC     1  STY     HBB     9    0.003   1.0080  
>     49       CR1     1  STY     CBC     9   -0.016  12.0110  
>     50        HC     1  STY     HBC     9    0.003   1.0080  
>     51       CR1     1  STY     CBD     9   -0.016  12.0110  
>     52        HC     1  STY     HBD     9    0.003   1.0080  
>     53       CH2     1  STY     CBN     9    0.039  14.0270  
>     54       CH1     1  STY     CBM    10    0.060  13.0190  
>     55         C     1  STY     CBG    10   -0.027  12.0110  
>     56       CR1     1  STY     CBH    10   -0.018  12.0110  
>     57        HC     1  STY     HBH    10    0.001   1.0080  
>     58       CR1     1  STY     CBI    10   -0.018  12.0110  
>     59        HC     1  STY     HBI    10    0.002   1.0080  
>     60       CR1     1  STY     CBJ    11   -0.016  12.0110  
>     61        HC     1  STY     HBJ    11    0.003   1.0080  
>     62       CR1     1  STY     CBK    11   -0.016  12.0110  
>     63        HC     1  STY     HBK    11    0.003   1.0080  
>     64       CR1     1  STY     CBL    11   -0.016  12.0110  
>     65        HC     1  STY     HBL    11    0.003   1.0080  
>     66       CH2     1  STY     CBV    11    0.039  14.0270  
>     67       CH1     1  STY     CBU    12    0.060  13.0190  
>     68         C     1  STY     CBO    12   -0.027  12.0110  
>     69       CR1     1  STY     CBP    12   -0.018  12.0110  
>     70        HC     1  STY     HBP    12    0.001   1.0080  
>     71       CR1     1  STY     CBQ    12   -0.018  12.0110  
>     72        HC     1  STY     HBQ    12    0.002   1.0080  
>     73       CR1     1  STY     CBR    13   -0.016  12.0110  
>     74        HC     1  STY     HBR    13    0.003   1.0080  
>     75       CR1     1  STY     CBS    13   -0.016  12.0110  
>     76        HC     1  STY     HBS    13    0.003   1.0080  
>     77       CR1     1  STY     CBT    13   -0.016  12.0110  
>     78        HC     1  STY     HBT    13    0.003   1.0080  
>     79       CH2     1  STY     CCD    13    0.039  14.0270  
>     80       CH1     1  STY     CCC    14    0.060  13.0190  
>     81         C     1  STY     CBW    14   -0.027  12.0110  
>     82       CR1     1  STY     CBX    14   -0.018  12.0110  
>     83        HC     1  STY     HBX    14    0.001   1.0080  
>     84       CR1     1  STY     CBY    14   -0.018  12.0110  
>     85        HC     1  STY     HBY    14    0.002   1.0080  
>     86       CR1     1  STY     CBZ    15   -0.016  12.0110  
>     87        HC     1  STY     HBZ    15    0.003   1.0080  
>     88       CR1     1  STY     CCA    15   -0.016  12.0110  
>     89        HC     1  STY     HCA    15    0.003   1.0080  
>     90       CR1     1  STY     CCB    15   -0.016  12.0110  
>     91        HC     1  STY     HCB    15    0.003   1.0080  
>     92       CH2     1  STY     CCL    15    0.039  14.0270  
>     93       CH1     1  STY     CCK    16    0.060  13.0190  
>     94         C     1  STY     CCE    16   -0.027  12.0110  
>     95       CR1     1  STY     CCF    16   -0.018  12.0110  
>     96        HC     1  STY     HCF    16    0.001   1.0080  
>     97       CR1     1  STY     CCG    16   -0.018  12.0110  
>     98        HC     1  STY     HCG    16    0.002   1.0080  
>     99       CR1     1  STY     CCH    17   -0.016  12.0110  
>    100        HC     1  STY     HCH    17    0.003   1.0080  
>    101       CR1     1  STY     CCI    17   -0.016  12.0110  
>    102        HC     1  STY     HCI    17    0.003   1.0080  
>    103       CR1     1  STY     CCJ    17   -0.016  12.0110  
>    104        HC     1  STY     HCJ    17    0.003   1.0080  
>    105       CH2     1  STY     CCT    17    0.039  14.0270  
>    106       CH1     1  STY     CCS    18    0.060  13.0190  
>    107         C     1  STY     CCM    18   -0.027  12.0110  
>    108       CR1     1  STY     CCN    18   -0.018  12.0110  
>    109        HC     1  STY     HCN    18    0.001   1.0080  
>    110       CR1     1  STY     CCO    18   -0.018  12.0110  
>    111        HC     1  STY     HCO    18    0.002   1.0080  
>    112       CR1     1  STY     CCP    19   -0.016  12.0110  
>    113        HC     1  STY     HCP    19    0.003   1.0080  
>    114       CR1     1  STY     CCQ    19   -0.016  12.0110  
>    115        HC     1  STY     HCQ    19    0.003   1.0080  
>    116       CR1     1  STY     CCR    19   -0.016  12.0110  
>    117        HC     1  STY     HCR    19    0.003   1.0080  
>    118       CH2     1  STY     CDB    19    0.039  14.0270  
>    119       CH2     1  STY     CDA    20    0.066  14.0270  
>    120         C     1  STY     CCU    20   -0.019  12.0110  
>    121       CR1     1  STY     CCV    20   -0.012  12.0110  
>    122        HC     1  STY     HCV    20    0.003   1.0080  
>    123       CR1     1  STY     CCW    20   -0.013  12.0110  
>    124        HC     1  STY     HCW    20    0.004   1.0080  
>    125       CR1     1  STY     CCX    20   -0.013  12.0110  
>    126        HC     1  STY     HCX    20    0.004   1.0080  
>    127       CR1     1  STY     CCY    20   -0.013  12.0110  
>    128        HC     1  STY     HCY    20    0.003   1.0080  
>    129       CR1     1  STY     CCZ    20   -0.013  12.0110  
>    130        HC     1  STY     HCZ    20    0.003   1.0080  
> 
> [ bonds ]
> ; ai  aj  fu    c0, c1, ...
>    1   2   2    0.109  12300000.0    0.109  12300000.0 ;   CAB  HAB  
>    1   3   2    0.139  10800000.0    0.139  10800000.0 ;   CAB  CAC  
> .
> .
> .
> .
> .
> ************
> 
> Thank you so much for your help :)
> 
> Sincerely,
> Harshith, Under Graduate,
> IITK
> http://home.iitk.ac.in/~harshith
> 
> 
> ------------------------------------------------------------------------
> 
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-- 
========================================

Justin A. Lemkul
Graduate Research Assistant
Department of Biochemistry
Virginia Tech
Blacksburg, VA
jalemkul[at]vt.edu | (540) 231-9080
http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin

========================================


-- 
========================================

Justin A. Lemkul
Graduate Research Assistant
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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