IUBMB Enzyme Nomenclature



Accepted name: (R)-2-hydroxyglutaryl-CoA dehydratase

Reaction: (R)-2-hydroxyglutaryl-CoA = (E)-glutaconyl-CoA + H2O

Other name(s): hgdAB (gene names)

Systematic name: (R)-2-hydroxyglutaryl-CoA hydro-lyase ((E)-glutaconyl-CoA-forming)

Comments: The enzymes from the bacteria Acidaminococcus fermentans and Clostridium symbiosum are involved in the fermentation of L-glutamate. The enzyme contains [4Fe-4S] clusters, FMNH2 and riboflavin. It must be activated by an activator protein. Once activated, it can catalyse many turnovers.

Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number:


1. Buckel, W. The reversible dehydration of (R)-2-hydroxyglutarate to (E)-glutaconate. Eur. J. Biochem. 106 (1980) 439-447. [PMID: 7398622]

2. Schweiger, G., Dutscho, R. and Buckel, W. Purification of 2-hydroxyglutaryl-CoA dehydratase from Acidaminococcus fermentans. An iron-sulfur protein. Eur. J. Biochem. 169 (1987) 441-448. [PMID: 3691501]

3. Muller, U. and Buckel, W. Activation of (R)-2-hydroxyglutaryl-CoA dehydratase from Acidaminococcus fermentans. Eur. J. Biochem. 230 (1995) 698-704. [PMID: 7607244]

4. Hans, M., Sievers, J., Muller, U., Bill, E., Vorholt, J.A., Linder, D. and Buckel, W. 2-hydroxyglutaryl-CoA dehydratase from Clostridium symbiosum. Eur. J. Biochem. 265 (1999) 404-414. [PMID: 10491198]

5. Locher, K.P., Hans, M., Yeh, A.P., Schmid, B., Buckel, W. and Rees, D.C. Crystal structure of the Acidaminococcus fermentans 2-hydroxyglutaryl-CoA dehydratase component A. J. Mol. Biol. 307 (2001) 297-308. [PMID: 11243821]

6. Parthasarathy, A., Pierik, A.J., Kahnt, J., Zelder, O. and Buckel, W. Substrate specificity of 2-hydroxyglutaryl-CoA dehydratase from Clostridium symbiosum: toward a bio-based production of adipic acid. Biochemistry 50 (2011) 3540-3550. [PMID: 21434666]

[EC created 2016]

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