[Chimera-users] how to color ribbons?

[Elaine Meng]

  Hi Mario,
I'll include two different ways you could do this in Chimera 1.1700:
----------------
  with menu     
----------------
 Actions... Atoms/Bonds... hide
 Actions... Ribbon... show    
 Actions... Ribbon... edged  
 Actions... Color... white  
 Select... Structure... secondary structure... helix
 Actions... Color... red
 Select... Structure... secondary structure... sheet
 Actions... Color... cyan
 Select... Clear selection
----------------
  with commands 
----------------
 ~display
 ribbon
 ribrepr edged
 ribcolor white
 ribcolor red :/isHelix
 ribcolor cyan :/isSheet
----------------
In both approaches, first the atoms are undisplayed, then the ribbon
is turned on.  The step setting the ribbon type to "edged" is optional;
you could use whichever ribbon type you want.  Then, I make everything
white before making helices red and strands cyan.  The reason I don't
use the turn descriptor is that it only applies to explicit PDB TURN
records, whereas in most cases, the PDB only contains HELIX and SHEET
records.

You could just put the commands in a plain text file, for example
named "sscolor.com," and then use the command "source sscolor.com"
to execute all the commands in the file.
(The file must be in the working directory; otherwise you will
have to include the whole path in the source command.)

I hope this helps!
  Elaine
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Elaine C. Meng, Ph.D.
Computer Graphics Lab and Babbitt Lab
meng at cgl.ucsf.edu
http://www.cgl.ucsf.edu/home/meng/index.html
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