[PyMOL] Downloading the biological assembly from the PDB

[Martin H. <ma...@bl...>]

Dear all
I would like to ask how it is possible to download the coordinate file 
for the biological assembly of a protein structure from the PDB.
Naturally, this is not a question directly related to PyMOL, but I 
thought I'll be reaching at least a couple of 
Biochemists/Chrystallographers who know how to do this.
As an example, when downloading the PDB file of "1AVD", I get a file 
with two chains. The biological assembly would be a tetramer, so I 
wonder what URL I would require to write into a script that does the 
downloading.

Thanks for help on this.
Martin