Thomas,

Very clever.

Chuck, you now have two options.

Cheers,

-- J

On Thu, Apr 5, 2012 at 8:51 AM, Thomas Holder
<spel...@users.sourceforge.net> wrote:
> Hi Chuck & Jason,
>
> escaping the hyphen also works for me:
>
> color red, resi \-50
>
> Cheers,
>  Thomas
>
> Jason Vertrees wrote, On 04/05/12 14:37:
>
>> Hi Chuck,
>>
>> PyMOL assumes your residues identifiers will be non-negative. Bad
>> assumption. PyMOL parses the string "-50" as the range "0-50". This
>> should be filed as a bug on the open-source tracker.
>>
>> In the meantime, you will have to adjust all the identifiers in order
>> to select. If -73 is the lowest number in the sequence in chain J then
>> you can add 73 to add indices like this,
>>
>> # adjust the indices
>>
>> alter chain J, resi=str(int(resi)+73)
>>
>> # update the sequence
>>
>> sort
>>
>> Now, just add 73 when you select:
>>
>> select c. J and i. 0
>>
>> Cheers,
>>
>> -- Jason
>>
>> On Thu, Apr 5, 2012 at 7:57 AM, chuck <chlang...@ucdavis.edu> wrote:
>>>
>>> In the 147bp nucleosome structure pdb1kx5 the DNA is a palindrome and
>>> numbering of the resi(dues) starts a the center bp (74), so -73 to +73.  The
>>> central bp is numbered 0.
>>>
>>> Can someone tell me the command syntax to set the colors of the bps
>>> before the central bp, e.g.,
>>>
>>> -50.
>>>
>>> commands such as "color red, (resi -50)"  changes all the bp unto +50
>>> (124).
>>>
>>> Cheers,
>>> Chuck
>
>
> --
> Thomas Holder
> MPI for Developmental Biology
> Spemannstr. 35
> D-72076 Tübingen



-- 
Jason Vertrees, PhD
PyMOL Product Manager
Schrödinger, LLC

(e) jason.vertr...@schrodinger.com
(o) +1 (603) 374-7120

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