4.2.1.110: aldos-2-ulose dehydratase

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For detailed information about aldos-2-ulose dehydratase, go to the full flat file.

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Synonyms

1,5-anhydro-D-fructose dehydratase (microthecin-forming), aldos-2-ulose dehydratase, aldos-2-ulose dehydratase/isomerase, aldosulose-utilizing enzyme, AUDH, pyranosone dehydratase

ECTree

     4 Lyases

         4.2 Carbon-oxygen lyases

             4.2.1 Hydro-lyases

                4.2.1.110 aldos-2-ulose dehydratase

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Results	in table
2	AA Sequence
2	CAS Registry Number
1	Cloned(Commentary)
2	General Information
1	General Stability
3	Inhibitors
2	KM Value [mM]
2	Metals/Ions
5	Molecular Weight [Da]
10	Natural Substrates/ Products (Substrates)
1	Organic Solvent Stability
13	Organism
3	PDB ID
6	pH Optimum
1	pH Range
2	pI Value
2	Purification (Commentary)
7	Reaction
5	Reaction Type
13	Reference
2	Source Tissue
2	Specific Activity [micromol/min/mg]
1	Storage Stability
23	Substrates and Products (Substrate)
6	Subunits
28	Synonyms
1	Systematic Name
1	Temperature Optimum [°C]

Systematic Name

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Systematic Name on EC 4.2.1.110 - aldos-2-ulose dehydratase

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SYSTEMATIC NAME

IUBMB Comments

1,5-anhydro-D-fructose hydro-lyase (microthecin-forming)

This enzyme catalyses two of the steps in the anhydrofructose pathway, which leads to the degradation of glycogen and starch via 1,5-anhydro-D-fructose [1,2]. Aldose-2-uloses such as 2-dehydroglucose can also act as substrates, but more slowly [1,2,4]. This is a bifunctional enzyme that acts as both a lyase and as an isomerase [2]. Differs from EC 4.2.1.111, which can carry out only reaction (1a), is inhibited by its product and requires metal ions for activity [1].