ChEMBL is medicinal chemistry database by the team of dr. J. Overington at the EBI.
It is detailed in this paper (doi:10.1093/nar/gkt1031):
http://nar.oxfordjournals.org/content/42/D1/D1083
This project develops, releases, and hosts a RDF version of ChEMBL, independent from the ChEMBL team who make their own RDF version.
The main SPARQL end point is available from Uppsala University at:
http://rdf.farmbio.uu.se/chembl/sparql
Or as SNORQL at:
http://rdf.farmbio.uu.se/chembl/snorql
Additionally, the data is available as Linked Data via LinkedChemistry.info:
If you use this (3rd party) RDF version of ChEMBL, please cite this paper. It is currently under review:
E.L. Willighagen, A. Waagmeester, O. Spjuth, P. Ansell, A.J. Williams, V. Tkachenko, J. Hastings, B. Chen, D.J. Wild, The ChEMBL database as Linked Open Data, 2013, J. Cheminformatics, 2013, 5:23 doi:10.1186/1758-2946-5-23, http://www.jcheminf.com/content/5/1/23/abstract
Alternatively, you can download the full set of triples as n3 or n-triples from www.dataverse.nl:
http://hdl.handle.net/10411/10279
The ChEMBL database is copyrighted by John Overington et al., and licensed CC-BY-SA:
http://creativecommons.org/licenses/by-sa/3.0/
as explained on:
http://www.ebi.ac.uk/chembldb/ ftp://ftp.ebi.ac.uk/pub/databases/chembl/ChEMBLdb/releases/chembl_13/LICENSE
The ChEMBL FAQ explains how you can fullfil the attribution part of the license:
https://www.ebi.ac.uk/chembldb/index.php/faq#faq29
If you use this RDF version of ChEMBL, you should cite the above mentioned JChemInf paper.
Authors that contributed to the RDF structure (see also the Git commit history) are:
Egon Willighagen, Peter Ansell
These scripts were tested against version 13 of ChEMBL, as downloaded from:
ftp://ftp.ebi.ac.uk/pub/databases/chembl/releases/chembl_13/
ChEMBL 13, OpenRDF (aka Sesame), SLF4J, and the MySQL JDBC plugin.
For PHP the MySQL server user and password are configured in a file called like mysqli.ini, for example on Debian:
/etc/php5/conf.d/20-mysqli.ini
The scripts expect a script only readble by the server software called vars.properties, with content like:
<?php
$version = '13';
$rooturi = 'http://data.kasabi.com/dataset/chembl-rdf/' . $version . '/';
$db = 'chembl_' . $version;
$user = 'user';
$pwd = 'secret';
// use the next line to limit the output
// $limit = ' LIMIT 5';
$limit = '';
?>
to access the MySQL database with the ChEMBL content.