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http://www.rcsb.org/pdb/search/smart.do?smartSearchSubtype_0=ChemSmilesQuery&searchType_0=Exact&polymericType_0=Any&smartComparator=and&target=Ligand&smiles_0=CC1C%28O%29CCC2%28C%29C1CCC1%28C%29C2C%28O%29CC2C%28C%28CC12C%29OC%28C%29%3DO%29%3DC%28CCC%3DC%28C%29C%29C%28O%29%3DO

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