[Biopython] Protein side-chain angles from a PDB file

[Rodrigo faccioli]

Hi,

I have a doubt about how can I calculate the protein side-chain angles from
a PDB file?

I've read the Bio.PDB.Vector evaluates the angles from three atoms. However,
my question is how can I  chose these atoms from a PDB file?

I have based on peter cook web-site and I have calculated the phi-psi angles
but I haven't seen about side-chain angles.

Sorry if my question is very basic. However, I'm a computer scientist novice
in chemistry issue.

Thanks in advance.

--
Rodrigo Antonio Faccioli
Ph.D Student in Electrical Engineering
University of Sao Paulo - USP
Engineering School of Sao Carlos - EESC
Department of Electrical Engineering - SEL
Intelligent System in Structure Bioinformatics
http://laips.sel.eesc.usp.br
Phone: 55 (16) 3373-9366 Ext 229
Curriculum Lattes - http://lattes.cnpq.br/1025157978990218