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KMID : 0379119890170040169
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Korean Journal of Mycology
1989 Volume.17 No. 4 p.169 ~ p.176
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Studies on the Light - Induced Mitochondrial ATPase in Pleurotus ostreatus
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Abstract
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Mitochondria in Pleurotus ostreatus was purified by stepped sucrose density gradient centrifugation. The activity of mitochondrial ATPase has been investigated during various times of illumination at each wavelength in the range of 400 ㎚ to 700 ㎚. The mitochondrial ATPase activity was stimulated 1,7 fold by 580 ㎚ illumination compared with the broad wavelength group. The mitochondrial ATPase activity according to various times of illumination was stimulated 2.2 fold for 10 seconds at 580 ㎚ compared with the broad wavelength group.
The optimum pH and temperature of the mitochondrial ATPase were 7.4 and 60℃, respectively. The activity of this enzyme was stimulated by 5 mmol Fe^(3+), 5 mmol Mg^(2+), 0.1 mmol Ca^(2+) and 5 mmol Fe^(2+) ion, but inhibited by 5 mmol Na^+ ion.
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