[BiO BB] How to download Protein complexes from PDB ?

[Shameer Khadar]

This is a simple yet a tricky issue : :)
I need to download a set of 200 complexes from PDB (they can include
dimers, trimers and tetramers). But they should only contain
proteins(no
DNA/RNA along with the protein). Is it possible get such 200
structures from PDB through web search. If yes, what search
keyword/strategy should I
use ? Or is there any other way to  get it done using SRS/BioMart ?

SK