Hello. I've been recently trying to obtain experimental data on protein interactions, up to the pdb entry. I've come to realize, there might not be such an easy way of obtaining this data - For example Stringdb or intAct only provide Uniprot or some other accession entries (If I'm not mistaken), And obtaining exact pdb from just the Uniprot is currently not possible - at least not precisely.

Is there any other way of obtaining experimental PPI pdb data?

Thank you very much in advance.
I am not sure what you mean by not possible to get exact PDB from UniProt. PDB is <a href="http://www.rcsb.org/pdb/staticHelp.do?p=help/advancedsearch/uniProtAccessionNumbers.html" target="_blank">searchable by Uniprot entry</a>. UniProt has a <a href="http://www.uniprot.org/docs/pdbtosp" target="_blank">PDB cross-reference file</a> and PDB also provides a list of <a href="http://www.rcsb.org/pdb/browse/uniprot.do?hasPDB=true" target="_blank">structures to Uniprot mapping</a>.

Also Andrew Martin's group at UCL provides a web <a href="http://www.bioinf.org.uk/pdbsws/" target="_blank">interface to the PDB/UniProt mapping</a> with <a href="http://www.bioinf.org.uk/pdbsws/cgi.html" target="_blank">REST access</a>.

You may also be interested in the EBI's <a href="https://www.ebi.ac.uk/pdbe/docs/sifts/index.html" target="_blank">SIFT</a> (Structure integration with function, taxonomy and sequence) resource.