Reaction: cis-aconitate = itaconate + CO2
Glossary: itaconate = 2-methylenesuccinate
cis-aconitate = (Z)-prop-1-ene-1,2,3-tricarboxylate
Other name(s): cis-aconitic decarboxylase; cis-aconitate carboxy-lyase; CAD1 (gene name); IRG1 (gene name)
Systematic name: cis-aconitate carboxy-lyase (itaconate-forming)
Comments: The enzyme has been characterized from the fungus Aspergillus terreus and from human macrophages. cf. EC 4.1.1.113, trans-aconitate decarboxylase.
Links to other databases: BRENDA, EXPASY, ExplorEnz, IUBMB, KEGG, MetaCyc, PDB, CAS registry number: 9025-01-8
References:
1. Bentley, R. and Thiessen, C.P. Biosynthesis of itaconic acid in Aspergillus terreus. III. The properties and reaction mechanism of cis-aconitic acid decarboxylase. J. Biol. Chem. 226 (1957) 703-720. [PMID: 13438855]
2. Dwiarti, L., Yamane, K., Yamatani, H., Kahar, P. and Okabe, M. Purification and characterization of cis-aconitic acid decarboxylase from Aspergillus terreus TN484-M1. J. Biosci. Bioeng. 94 (2002) 29-33. [PMID: 16233265]
3. Kanamasa, S., Dwiarti, L., Okabe, M. and Park, E.Y. Cloning and functional characterization of the cis-aconitic acid decarboxylase (CAD) gene from Aspergillus terreus. Appl. Microbiol. Biotechnol. 80 (2008) 223-229. [PMID: 18584171]
4. Michelucci, A., Cordes, T., Ghelfi, J., Pailot, A., Reiling, N., Goldmann, O., Binz, T., Wegner, A., Tallam, A., Rausell, A., Buttini, M., Linster, C.L., Medina, E., Balling, R. and Hiller, K. Immune-responsive gene 1 protein links metabolism to immunity by catalyzing itaconic acid production. Proc. Natl Acad. Sci. USA 110 (2013) 7820-7825. [PMID: 23610393]