[Chimera-users] Adjust angle

Eric Pettersen pett at cgl.ucsf.edu
Tue Apr 19 16:15:09 PDT 2011

Hi Thomas,
	Since Chimera allows you to change bond lengths and torsion angles,  
it would seem that just as a matter of completeness it should allow  
you to change bond angles as well.  So despite that not being a  
commonplace desire, I will add it to my to-do list and open a feature- 
request ticket in our Trac database with you on the recipient list so  
you'll know when it gets implemented.  It may take awhile (there's a  
request for chirality inversion in front of it), but it'll get done  


P.S.  In case you didn't know, you can set bond lengths in the "Adjust  
Bonds" tab of the Build Structure tool.

On Apr 19, 2011, at 9:55 AM, Thomas Mitterfellner wrote:

> Hello!
> My question is: it possible not just to measure but to change the  
> angle
> between three atoms (e.g. A1 and A2 fixed, A3 rotated in the plane
> spanned by A1-A2-A3 with radius A2-A3)?
> What I really like in Chimera (and miss in other molecular modelling
> software) is the possibility to move/rotate only the atoms selected,
> which is great e.g. for pre-aligning two molecular fragments when
> modelling transition states.
> I know chimera is actually rather intended to be used for large
> molecules but it could be a great tool for modifying/building  
> structures
> if only it was easier to modify structural parameters like bond  
> lengths,
> angles and torsions (which I saw is possible).
> Kind regards,
> Thomas Mitterfellner
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