The Chemical Entities of Biological Interest (ChEBI) ontology is downloaded weekly from EMBL-EBI at http://www.ebi.ac.uk/chebi/. The data is made available under the Creative Commons License (CC BY 3.0, http://creativecommons.org/licenses/by/3.0/). For more information see: Degtyarenko et al. (2008) ChEBI: a database and ontology for chemical entities of biological interest. Nucleic Acids Res. 36, D344–D350.
An N-acetyl-L-amino acid that is L-cysteine in which the hydrogen of the thiol group has been replace by a 1,2-dicarboxyethyl group. The first metabolite in the disposal of S-(2-succino)-L-cysteine by Bacillus subtilis.