IUBMB Enzyme Nomenclature


Accepted name: 3,6-anhydro-L-galactonate cycloisomerase

Reaction: 3,6-anhydro-L-galactonate = 2-dehydro-3-deoxy-L-galactonate

Other name(s): 3,6-anhydro-α-L-galactonate lyase (ring-opening); 3,6-anhydro-α-L-galactonate cycloisomerase

Systematic name: 3,6-anhydro-L-galactonate lyase (ring-opening)

Comments: The enzyme, characterized from the marine bacteria Vibrio sp. EJY3 and Postechiella marina M091, is involved in a degradation pathway for 3,6-anhydro-α-L-galactopyranose, a major component of the polysaccharides of red macroalgae.

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


1. Yun, E.J., Lee, S., Kim, H.T., Pelton, J.G., Kim, S., Ko, H.J., Choi, I.G. and Kim, K.H. The novel catabolic pathway of 3,6-anhydro-L-galactose, the main component of red macroalgae, in a marine bacterium. Environ. Microbiol. 17 (2015) 1677-1688. [PMID: 25156229]

2. Lee, S.B., Cho, S.J., Kim, J.A., Lee, S.Y., Kim, S.M. and Lim, H.S. Metabolic pathway of 3,6-anhydro-L-galactose in agar-degrading microorganisms. Biotechnol. Bioprocess Eng. 19 (2014) 866-878.

[EC created 2014, modified 2015]

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