| EC |
4.2.1.179 |
| Accepted name: |
difructose-anhydride-I synthase |
| Reaction: |
inulobiose = bis-D-fructose 2′,1:2,1′-dianhydride + H2O |
| Glossary: |
α-D-fructofuranose-β-D-fructofuranose 2′,1:2,1′-dianhydride = bis-D-fructose 2′,1:2,1′-dianhydride = difructose anhydride I = DFA-I |
| Other name(s): |
DFAIase; inulobiose hydrolase; bis-D-fructose 2′,1:2,1′-dianhydride fructohydrolase |
| Systematic name: |
inulobiose hydro-lyase (α-D-fructofuranose-β-D-fructofuranose 2′,1:2,1′-dianhydride-forming) |
| Comments: |
The enzyme, studied in the fungus Aspergillus fumigatus, may participate in an inulin degradation pathway in which it converts the product of EC 4.2.2.17, inulin fructotransferase (DFA-I-forming), to inulobiose, though in vitro activity was higher in the direction of DFA-I formation. |
| Links to other databases: |
BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number: 121479-55-8 |
| References: |
| 1. |
Matsuyama, T. and Tanaka, K. On the enzyme of Aspergillus fumigatus producing difructose anhydride I from inulobiose. Agric. Biol. Chem. 53 (1989) 831–832. |
| 2. |
Matsuyama, T., Tanaka, K., Mashiko, M. and Kanamoto, M. Enzymic formation of di-D-fructose 1,2′; 2,1′ dianhydride from inulobiose by Aspergillus fumigatus. J. Biochem. (Tokyo) 92 (1982) 1325–1328. [PMID: 6757245] |
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| [EC 4.2.1.179 created 1992 as EC 3.2.1.134, transferred to EC 4.2.1.179 2021] |
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