I have been using STRING to generate interacting partners of a specific protein. (based on this post).

In the graphical version when for example for protein O15357 , I perform the search I can see the network and I am able to generate the PDB Codes of the interacting partners for those which have a structure.

Now I need to use the STRING API and for generating the interacting partners for O15357, I simply use:

http://string-db.org/api/tsv-no-header/interactorsList?identifiers=O15357&required_score=900&limit=10

But this one only returns the Ensembl Id (e.g. .ENSP00000275493) of the interacting partners.

When I use the command below, I can retrieve the pdbcodes but I do not understand the format:

http://string.embl.de/api/psi-mi/interactionsList?identifiers=O15357&required_score=400&limit=20

Do you have any suggestion how to generate the pdb codes? is it possible to generate pdb code for Ensembl Ids?

thanks in advance.