Ca virtual torsion angles

Steve Gardner steve.gardner at draco.se.astra.com
Wed Jul 9 02:07:25 EST 1997


John Kuszewski wrote:
> 
> Hi,
> 
> I've been playing with using the "virtual torsion angle"
> defined by the positions of four consecutive residues'
> alpha carbons to define pieces of structure.
> 
> I've heard of other people doing this before.
> 
> Does anyone know if there's a standard name for this
> angle (ala calling the N..Ca..C..N angle "psi")?
> --
>                                    _____________

In the Iditis database, and I believe in Kabsch and Sander's DSSP
program this is called ALPHA.

----------------------------------------------------------------------
Dr Steve Gardner

Director                         Tel: +46 46 33 60 00
Astra Bioinformatics Centre      Fax: +46 46 33 71 44
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S-221 00 Lund
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