Metabolism of p-Hydroxybenzoate via Hydroxyquinol by Trichosporon cutaneum WY2-2 : Characterization of the Pathway using Superoxide Disimnutase as a Stabilizer of Hydroxyquinol
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概要
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Trichosporon cutaneum WY2-2 was shown to metabolize p-hydroxybenzoate via protocatechuate and hydroxyquinol. Using superoxide dismutase as a stabilizer of hydroxyquinol, the conversion of protocatechuate to hydroxyquinol and the ring fission process of hydroxyquinol were confirmed. Hydroxyquinol was chemically identified as the product of protocatechuate hydroxylase reaction. Partially purified protocatechuate hydroxylase was highly specific for protocatechuate; its K_m values for protocatechuate and NADH were 17.6 and 12.4 μM, respectively. It catalyzed equimolar CO_2 formation, NADH oxidation and O_2 consumption from protocatechuate. Hydroxyquinol dioxygenase was highly specific for hydroxyquinol, with a K_m of 2.9 μM.
- 日本植物生理学会の論文
著者
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Itoh Masao
Department Of Agricultural Chemistry . Faculty Of Agriculture Nagoya University:(present)shin Nihon
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Suzuki Katsunori
Department Of Agricultural Chemistry . Faculty Of Agriculture Nagoya University:(present )biological
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