On Mar 23, 2012, at 3:30 PM, Nikolay Igorovich Rodionov wrote:

Hi all,
 
I’m working on a project that requires me to merge models created through PDB BIOMT records. I have been using the copy&combine feature in the model panel to merge all of my models, and then writing a new PDB of only the combined model. I’ve noticed that this method deletes a large amount of information about the structure, including secondary structure records. Is there a way to merge models without losing such data?
 
If it is relevant, I am merging 90+ models.

Hi Nikolay,
So, why do you want to preserve the various header records in the merged models?  Chimera will write out appropriate HELIX and SHEET records for your merged structure if you save it in PDB format.
I guess I'm pretty unclear as to how to "merge" many of the various record types when combining models.  Such as:  AUTHOR, COMPND, CRYST1, EXPDTA, HEADER, ORIGX, various REMARK records, TITLE, and so on.

--Eric

                        Eric Pettersen

                        UCSF Computer Graphics Lab

                        http://www.cgl.ucsf.edu