Kinetics and Mechanism of Reduction of Metmyoglobins by Dithionite. Role of the Heme Propionates.
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概要
- 論文の詳細を見る
The kinetics of the reduction by dithionite ions of metmyoglobins reconstituted with porphinatoiron(III) complexes containing the protoporphyrin IX dimethyl ester, the deuteroporphyrin IX dimethyl ester, and octaethylporphyrin were studied at 25°C and pH 6.3–9.2 in aqueous solution. Esterification of the heme propionate groups accelerated the reduction rate by SO<SUB>2</SUB><SUP>\divdot</SUP> as well as the case of octaethylporphyrin (which does not contain the propionate groups); it also affected the redox potential of metmyoglobin, but much less so the rate of the self-exchange reaction. The reaction mechanisms are discussed.
- 公益社団法人 日本化学会の論文
著者
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Tsukahara Keiichi
Department Of Chemistry Faculty Of Science Nara Women's University
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Ishida Kazuyo
Department of Chemistry, Faculty of Science, Nara Women's University
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