Thanks Tom, It was a great help. Yes it is working with Chimera 1.6 On Thu, Mar 29, 2012 at 12:15 PM, Tom Goddard <goddard@sonic.net> wrote:

In Chimera 1.6 if you use "sym #0 group i222" to copy molecule #0 using icosahedral symmetry and then save #0 as a PDB then it puts the 60 symmetry matrices in PDB REMARK 350 BIOMT matrices. Chimera 1.5 does not do this.

Tom

Dear Chimera Users,

...

Is it possible to save the coordinates after the VIPER transformation (xyz-2 fold symmetry) in Chimera. I can create a multiscale biological molecule in chimera but it is not saving the viper matrix in pdb file. Please note that this pdb is a model not the crystal structure and I am trying to save the viper matrix for this pdb.

Thank you, S

Hi Hernando, I'm guessing that you also need to change the top setting in the Background preferences: Background method: image I hope this helps, Elaine ----- Elaine C. Meng, Ph.D. UCSF Computer Graphics Lab (Chimera team) and Babbitt Lab Department of Pharmaceutical Chemistry University of California, San Francisco On Mar 30, 2012, at 10:14 AM, Hernando J Sosa wrote:

Hi, I need help to put an image in the background of the main chimera window. I am using the background settings dialogue in preferences and after loading the image it does appear in the little icon in the dialogue box but not on the main chimera window. Do I need to do something else? The image I am trying to place is in jpeg format and I am using Chimera version 1.6 Thanks Hernando