Formation of Zinc Protoporphyrin IX and Protoporphyrin IX from Oxymyoglobin in Porcine Heart Mitochondria
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概要
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The formation of zinc protoporphyrin IX (ZnPP) and protoporphyrin IX (PP) in porcine heart mitochondria was investigated by fluorescent spectral analysis. The time-course study at 37°C and pH 5.5 with 100μM ZnCl2 showed a linear formation of ZnPP from oxymyoglobin after a lag-period (9h) at the formation rate of 0.46nmol/h. The formed amount of ZnPP is dependent upon the ZnCl2 concentration. In the incubation without ZnCl2, the new peak derived from PP appeared at 633nm after 12h, and then its intensity gradually increased. The formation of PP is believed to be due to the release of Fe2+ in porphyrin ring of oxymyoglobin during the incubation. This suggests that the mitochondria have the ability to form PP from oxymyoglobin, and therefore, are directly related to the release of Fe2+ from porphyrin ring in myoglobin.
- 2007-02-01
著者
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ISHIKAWA Hiroya
Department of Polymer Science and Engineering, Faculty of Textile Science, Kyoto Institute of Techno
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佐藤 雅彦
伊藤ハム株式会社中央研究所
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佐藤 雅彦
伊藤ハム・中央研究所
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Sato Masahiko
Central Research Institute Itoham Foods Inc.
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Matsumoto Kiyoshi
Department Of Bioscience And Biotechnology Faculty Of Agriculture Graduate School Of Kyushu Universi
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Matsumoto Kiyoshi
Department Of Applied Chemistry Faculty Of Engineering Kanagawa University
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KAWABUCHI Taiki
Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School of Kyushu Univer
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KAWAKAMI Yuriko
Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School of Kyushu Univer
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SATO Masahiko
Itoham Foods Inc.
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NUMATA Masahiro
Itoham Foods Inc.
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Kawakami Yuriko
Department Of Bioscience And Biotechnology Faculty Of Agriculture Graduate School Of Kyushu Universi
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Kawabuchi Taiki
Department Of Bioscience And Biotechnology Faculty Of Agriculture Graduate School Of Kyushu Universi
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Ishikawa Hiroya
Department Of Bioscience And Biotechnology Faculty Of Agriculture Graduate School Of Kyushu Universi
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Ishikawa Hiroya
Graduate School Of Bioresource And Bioenvironmental Sciences Kyushu University
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Ishikawa Hiroya
Department Of Bioscience And Biotechnology Faculty Of Agriculture Graduate School Kyushu University
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Ishikawa Hiroya
Department Of Bioscience And Biotechnology Faculty Of Agriculture Graduate School Of Kyushu Universi
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Sato Masahiko
Ito ham Corp.
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佐藤 雅彦
伊藤ハム株式会社 中央研究所
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