Ligand Energy Controls the Heme-Fe Valence in Aqueous Myoglobins
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- Harada Yoshihisa
- RIKEN/SPring-8 Department of Applied Chemistry, The University of Tokyo CREST, JST (Japan Science and Technology)
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- Taguchi Munetaka
- RIKEN/SPring-8
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- Miyajima Yoshiharu
- RIKEN/SPring-8
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- Tokushima Takashi
- RIKEN/SPring-8
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- Horikawa Yuka
- RIKEN/SPring-8 Department of Chemistry, Hiroshima University
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- Chainani Ashish
- RIKEN/SPring-8
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- Shiro Yoshitsugu
- RIKEN/SPring-8
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- Senba Yasunori
- JASRI/SPring-8
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- Ohashi Haruhiko
- JASRI/SPring-8
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- Fukuyama Hidetoshi
- Department of Applied Physics, Tokyo University of Science
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- Shin Shik
- RIKEN/SPring-8 CREST, JST (Japan Science and Technology) Institute for Solid State Physics, The University of Tokyo
書誌事項
- 公開日
- 2009
- DOI
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- 10.1143/jpsj.78.044802
- 公開者
- 一般社団法人 日本物理学会
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説明
We use resonant X-ray emission spectroscopy and model calculations to quantify the ligand: heme-Fe energy structure of aqueous myoglobins. For reduced (Fe2+) and oxidized (Fe3+) states, the removal or addition of an electron primarily involves charge changes on the ligand-site, and not the Fe-site. The results indicate a finite positive/negative charge-transfer energy Δ between the heme-Fe 3d and ligand valence electronic states for Fe2+/Fe3+. Thus, the energy difference between the ligand and Fe 3d states (+Δ or −Δ) determines the charge properties of myoglobins. The study provides a reliable method for characterizing ligand-metal binding of biological systems in solution.
収録刊行物
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- Ｊｏｕｒｎａｌ ｏｆ ｔｈｅ Ｐｈｙｓｉｃａｌ Ｓｏｃｉｅｔｙ ｏｆ Ｊａｐａｎ
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Ｊｏｕｒｎａｌ ｏｆ ｔｈｅ Ｐｈｙｓｉｃａｌ Ｓｏｃｉｅｔｙ ｏｆ Ｊａｐａｎ 78 (4), 044802-044802, 2009
一般社団法人 日本物理学会
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詳細情報 詳細情報について
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- CRID
- 1390282679173281024
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- NII論文ID
- 130005437451
- 10025959931
- 210000107783
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- NII書誌ID
- AA00704814
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 10206770
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- 本文言語コード
- en
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- データソース種別
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