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Literature summary for extracted from

  • Fuji, I.; Ebizuka, Y.; Sankawa, U.
    A novel anthraquinone ring cleavage enzyme from Aspergillus terreus (1988), J. Biochem., 103, 878-883.
    View publication on PubMed

General Stability

General Stability Organism
very unstable, polyols, non-ionic detergents and EDTA have stabilizing effects Aspergillus terreus


Localization Comment Organism GeneOntology No. Textmining
Aspergillus terreus 5829

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
questin + NADPH + H+ + O2 Aspergillus terreus absolute requirement for oxygen and NADPH demethylsulochrin + NADP+


Organism UniProt Comment Textmining
Aspergillus terreus

Purification (Commentary)

Purification (Comment) Organism
partial, additional functional protein or proteins required for full activity Aspergillus terreus

Source Tissue

Source Tissue Comment Organism Textmining
Aspergillus terreus

Specific Activity [micromol/min/mg]

Specific Activity Minimum [┬Ámol/min/mg] Specific Activity Maximum [┬Ámol/min/mg] Comment Organism
crude extract Aspergillus terreus

Storage Stability

Storage Stability Organism
cold room, 0.01 M Tris-HCl, pH 7.5, 50% ethylene glycol, v/v, 1 mM EDTA, 0.05% Tween 80, w/v, 70-80% of its original activity after 2 days Aspergillus terreus

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
questin + NADPH + H+ + O2 absolute requirement for oxygen and NADPH Aspergillus terreus demethylsulochrin + NADP+

Temperature Stability [┬░C]

Temperature Stability Minimum [┬░C] Temperature Stability Maximum [┬░C] Comment Organism
complete loss of activity overnight Aspergillus terreus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
Aspergillus terreus


Cofactor Comment Organism Structure
NADPH highly specific Aspergillus terreus