OCA© integrates data from the following sources that are of free access for Universities. If you plan to use OCA© in a commercial environment or for profit, please be sure you have the proper clearance from OCA© and all the OCA© data sources.
GPCRDB information system for G protein-coupled receptors.
KEGG Kyoto Encyclopedia of Genes and Genomes
OMIM comprehensive catalog of inherited diseases.
PDBselect Subset of the structures in the PDB that does not contain (highly) homolog sequences.
Pfam database of multiple alignments of protein domains or conserved protein regions.
Protein Data Bank the single international repository for the processing and distribution of 3-D macromolecular structure data primarily determined experimentally by X-ray crystallography and NMR.
PubMed biomedical journal citations database.
SCOP a structural classification of proteins database for the investigation of sequences and structures.
SwissProt a curated protein sequence database.