Try something like this to superimpose the backbone N, C and CA atoms of 
multiple segments:

-selection "(((resid 4:25) or (resid 34:52) or (resid 61:76) or
                                (resid 84:101) or (resid 108:114)) and
                                ( name n or name ca or name c ))" ....

The AND and OR logic can be tricky.

Keith

Keith L. Constantine, Ph. D.

Sr. Research Investigator II
Mechanistic Biochemistry
Bristol Myers Squibb Research and Development
P.O. Box 4000
Princeton, NJ 08543-4000
Tel: (609)-252-6926
Fax: (609)-252-6012
e-mail: keith.constantine at bms.com

From: xplor-nih-bounces at nmr.cit.nih.gov 
[mailto:[email protected]] On Behalf Of Daniel Fox
Sent: Friday, July 20, 2012 11:46 AM
To: xplor-nih at nmr.cit.nih.gov
Subject: [Xplor-nih] targetRMSD

Hello, I'm attempting to run the script targetRMSD on my ensemble.  I have had 
success looking at a specific seqgment, such as resid 10:20 however I 
ultimately want to use this script to look at the strands of my beta-barrel and 
as such would need to combine 8 different segments, i.e resid 10:20 AND resid 
50:60 etc, however I cannot find a way for the script to recognize multiple 
segments.

I'm currently running the script as:
% targetRMSD -seletion "resid 10:17 and name CA" avg.pdb struc*.pdb

Any help would be greatly apprecipated


--
Daniel Fox
Columbus Lab
Department of Chemistry
University of Virginia
Charlottesville, VA 22904

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