Hi Sara,

which version are you using? I can't reproduce that with 12.3.12 and 12.2.12.

With this script everything looks normal:

set pdbaddhydrogens ;
load=1H6I ;
cpk off ; wireframe on ;
select [TYR]227:A OR [ALA]232:A ;
wireframe 0.15 ; cpk 25% ;
center selected ;
zoomto 1 (selected) 500;
rotate y -70.0 -2 spin ;
delay 3 ;
selectionhalos on ;
select [ALA]232:A ;
delay 3 ;
select [TYR]227:A ;
delay 3 ;
select [ALA]232:A.H

Oliver


On Fri, Mar 9, 2012 at 14:50, Sara Bonner <bonn...@mit.edu> wrote:
> HI
>
> Using the set addPdbHydrogens functionality I am finding that sometimes the
> hydrogens are associated with more than one amino acid.  Are you making the
> hydrogen selection based on the label of the hydrogen or based on its
> distance from the surrounding atoms?  Is there any way to have control over
> this?
>
> Example:
> set addPdbHydrogens;
> load=1H6I;
> select [ALA]232:A;
> spacefill 100%;
> select [TYR]227:A;
> spacefill 50%;
>
> Note how the hydrogen atom labeled [ALA]232:A.H #3348 changes in size for
> both selections.
>
> This becomes relevant for me as I am sorting hydrogen bonds according to the
> structures they apply to.  From the example given about, according to the
> label on the hydrogen this should be a tertiary hbond between the oxygen in
> 227 and the hydrogen in 232 and that part works fine.  The problem comes in
> when this same hbond is added to the secondary hbonds.  Because both the O
> and H atoms are considered to be in the same amino acid bondMode AND doesn't
> help.
>
> Thanks
> Sara
>
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Virtualization & Cloud Management Using Capacity Planning
Cloud computing makes use of virtualization - but cloud computing 
also focuses on allowing computing to be delivered as a service.
http://www.accelacomm.com/jaw/sfnl/114/51521223/
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