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http://www4.rcsb.org/pdb/search/smart.do?smartSearchSubtype_0=ChemSmilesQuery&searchType_0=Similar&similarity_0=0.8&polymericType_0=Any&smartComparator=and&target=Ligand&smiles_0C%255BCH%255D(F)%255BCH%255D1COC(%253DO)N1c2ccnc(N%255BCH%255D(C)c3cc(C)c(cn3)c4ccnc(c4)C(F)(F)F)n2

It has been permanently removed as part of our announced shutdown on December 9th, 2020.

See the Legacy API Shutdown December 9 announcement for further details.


Legacy APIs

If you are using one of the legacy API endpoints, you will need to migrate to the new json-based APIs.

The new APIs provide more comprehensive search and fetch capabilities, see Web Services Overview.

Documentation for the new services and migration guides are available:

Data API tutorial
Search API tutorial
Data API migration guide
Search API migration guide