[Chimera-users] B-Factor

[Eric Pettersen]

On Monday, December 8, 2003, at 01:17  PM, Luis Cuello wrote:

> Hello, My name is Luis Cuello and I am a graduate student at the  
> University of Virginia….I started using chimera recently but I have  
> not been able to colored my files by B-factors values, Is there any  
> way to do that with chimera software??? If you could help me in this  
> matter I would appreciated….

Hi Luis,
	We intend to make a nice interface for coloring structures by  
associated numerical values (such as B factors), but for now a series  
of typed commands will do what you want to do.  To color a structure so  
that B factors less than 10 are shown as green, between 10 and 20 as  
yellow, and over 20 as red, do:

	color green
	color yellow @/bfactor>10
	color red @/bfactor>20

Obviously, use whatever numerical cutoffs and colors you want.  There  
is a discussion of the the atom/residue/model attributes you can use in  
commands at  
http://www.cgl.ucsf.edu/chimera/docs/UsersGuide/midas/ 
atom_spec.html#descriptors .

	Eric Pettersen
	UCSF Computer Graphics Lab
	pett at cgl.ucsf.edu