[BioPython] "centering" pdb files

[Christian Meesters]

Hi,

I'm new to the list and just installed BioPython (wanted to do that, anyway - 
apart from the question I have).

Many proteins have internal rotational symmetry. Is it possible to read in a 
PDB file and center in a way that the axis of the rotational symmetry and one 
axis of the coordinates aligns / is superimposed? Has anyone done that using 
BioPython or knows a different Python module which allows this?

TIA
Christian