If you want oligomer structures, try:
ftp://pdb.pdb.bnl.gov/user_group/biological_units/
or:
ftp://pdb.weizmann.ac.il/user_group/biological_units/
This has PDB files which "CONTAINS COORDINATES FOR A COMPLETE MULTIMER
REPRESENTING THE KNOWN BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE
MOLECULE." (Normal PDB files are only of the asymmetric unit - usually
monomer).
Kurt
-- -------------------------------------------------------------------------- Dr. Kurt Giles Department of Structural Biology | e-mail: kurt@sgjs4.weizmann.ac.il Weizmann Institute of Science | vox: +972-8-9343759 76100 Rehovot, Israel | fax: +972-8-9344159 ** http://www.weizmann.ac.il/~cskurt/home.html ** --------------------------------------------------------------------------