[Chimera-users] PDB model merging

Eric Pettersen pett at cgl.ucsf.edu
Fri Mar 23 17:13:46 PDT 2012

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 Pettersen
                         UCSF Computer Graphics Lab

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