KEGG ENZYME: 4.2.1.179

ENZYME: 4.2.1.179

Entry

EC 4.2.1.179                Enzyme

Name

difructose-anhydride-I synthase;
DFAIase;
inulobiose hydrolase;
bis-D-fructose 2',1:2,1'-dianhydride fructohydrolase

Class

Lyases;
Carbon-oxygen lyases;
Hydro-lyases

Sysname

inulobiose hydro-lyase (alpha-D-fructofuranose-beta-D-fructofuranose 2',1:2,1'-dianhydride-forming)

Reaction(IUBMB)

inulobiose = bis-D-fructose 2',1:2,1'-dianhydride + H2O [RN:R03685 R06161]

Reaction(KEGG)

R03685 R06161(G)

Substrate

inulobiose [CPD:C01711]

Product

bis-D-fructose 2',1:2,1'-dianhydride [CPD:C04333];
H2O [CPD:C00001]

Comment

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.

History

EC 4.2.1.179 created 1992 as EC 3.2.1.134, transferred to EC 4.2.1.179 2021

Reference

Authors

Matsuyama, T. and Tanaka, K.

Title

On the enzyme of Aspergillus fumigatus producing difructose anhydride I from inulobiose.

Journal

Agric Biol Chem 53:831-832 (1989)

Reference

2 [PMID:6757245]

Authors

Matsuyama T, Tanaka K, Mashiko M, Kanamoto M.

Title

Enzymic formation of di-D-fructose 1,2'; 2,1' dianhydride from inulobiose by Aspergillus fumigatus.

Journal

J Biochem (Tokyo) 92:1325-8 (1982)
DOI:10.1093/oxfordjournals.jbchem.a134051

Other DBs

ExplorEnz - The Enzyme Database:

4.2.1.179

IUBMB Enzyme Nomenclature:

4.2.1.179

ExPASy - ENZYME nomenclature database:

4.2.1.179

BRENDA, the Enzyme Database:

4.2.1.179

CAS:	121479-55-8

All links

Chemical substance (4)   
   KEGG COMPOUND (3)   
   KEGG GLYCAN (1)   
Chemical reaction (3)   
   KEGG REACTION (2)   
   KEGG RCLASS (1)   
All databases (7)   

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