Hi Bernhard,

this issue came up before and we think PyMOL is doing it right. See this post 
(workaround included):
http://sourceforge.net/p/pymol/mailman/message/32385858/

Cheers,
  Thomas

On 09 Sep 2014, at 13:50, Bernhard Lechtenberg 
<blechtenb...@sanfordburnham.org> wrote:

> Hi all,
> 
> I have problems showing a EM structure in PyMol. When I open the PDB file 
> 3J6J in PyMol, the structure is shown very small in a diameter of about 1Ang. 
> This makes some representations like Cartoon or sticks unusable and 
> comparison with other structures impossible. I checked the file and it seems 
> like the unit cell is set to P1 with 1Ang dimensions in all  directions:
> 
> CRYST1    1.000    1.000    1.000  90.00  90.00  90.00 P 1           1        
>   
> ORIGX1      1.000000  0.000000  0.000000        0.00000                       
>   
> ORIGX2      0.000000  1.000000  0.000000        0.00000                       
>   
> ORIGX3      0.000000  0.000000  1.000000        0.00000                       
>   
> SCALE1      0.010081  0.000000  0.000000        0.00000                       
>   
> SCALE2      0.000000  0.010081  0.000000        0.00000                       
>   
> SCALE3      0.000000  0.000000  0.012601        0.00000 
> 
> I think that's were the problem lies. When I manually edited the PDB file and 
> replaced the 1.000 values in the CRYST1 record with the values decided by the 
> numbers in the SCALE records, the structure is shown correctly.So I think 
> PyMOL is not reading the SCALE record correctly. The same file is shown 
> correctly in other software like Coot or CCP4MG, so I think it is a Pymol 
> related problem.
> 
> I am using Pymol 1.7.2.1 on MacOSX but had the same problem on a Windows 
> computer. 
> 
> Bernhard
> 
> 
> Bernhard C. Lechtenberg, PhD
> Postdoctoral Fellow
> Riedl Lab
> Sanford-Burnham Medical Research Institute
> 10901 North Torrey Pines Road 
> La Jolla, CA 92037, USA
> Phone: 858.646.3100 x 4216
> Email: blechtenb...@sanfordburnham.org

-- 
Thomas Holder
PyMOL Developer
Schrödinger, Inc.


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