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- 한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology 제27권 제12호
- 발행연도
- 2017.1
- 수록면
- 2,173 - 2,179 (7page)
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The intracytoplasmic membrane of Rhodobacter sphaeroides readily vesiculates when cells are lysed. The resulting chromatophore membrane vesicle (CMV) contains the photosynthetic machineries to synthesize ATP by ATPase. The light-dependent ATPase activity of CMV was lowered in the presence of O2, but the activity increased to the level observed under anaerobic condition when the reaction mixture was supplemented with ascorbic acid (≥0.5 mM). Cell lysis in the presence of biotinyl cap phospholipid (bcp) resulted in the incorporation of bcp into the membrane to form biotinylated CMV (bCMV), which binds to streptavidin resin at a ratio of approximately 24 μg bacteriochlorophyll a/ml resin. The ATPase activity of CMV was not affected by biotinylation, but approximately 30% of the activity was lost by immobilization to resin. Interestingly, the remaining 70% of ATPase activity stayed constant during 7-day storage at 4oC. On the contrary, the ATPase activity of bCMV without immobilization gradually decreased to approximately 40% of the initial level in the same comparison. Thus, the ATPase activity of CMV is sustainable after immobilization, and the immobilized bCMV can be used repeatedly as an ATP generator.
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참고문헌 (25)
참고문헌 신청
Berghoff BA / 2011 / Anoxygenic photosynthesis and photooxidative stress: a particular challenge for Roseobacter / Environ. Microbiol 13 : 775 ~ 791
Bryant DA / 2006 / Prokaryotic photosynthesis and phototrophy illuminated / Trends Microbiol 14 : 488 ~ 496
Cartron ML / 2014 / Integration of energy and electron transfer processes in the photosynthetic membrane of Rhodobacter sphaeroides / Biochim. Biophys. Acta 1837 : 1769 ~ 17
Castro ML / 2017 / High dose ascorbate causes both genotoxic and metabolic stress in glioma cells / Antioxidants 6 : 58 ~
Cohen-Bazire G / 1957 / Kinetic studies of pigment synthesis by non-sulfur purple bacteria / J. Cell. Comp. Physiol 49 : 25 ~ 68
Bryant DA / 2006 / Prokaryotic photosynthesis and phototrophy illuminated / Trends Microbiol 14 : 488 ~ 496
Cartron ML / 2014 / Integration of energy and electron transfer processes in the photosynthetic membrane of Rhodobacter sphaeroides / Biochim. Biophys. Acta 1837 : 1769 ~ 17
Castro ML / 2017 / High dose ascorbate causes both genotoxic and metabolic stress in glioma cells / Antioxidants 6 : 58 ~
Cohen-Bazire G / 1957 / Kinetic studies of pigment synthesis by non-sulfur purple bacteria / J. Cell. Comp. Physiol 49 : 25 ~ 68
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