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ファイル | 記述 | サイズ | フォーマット | |
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j.bpj.2012.04.016.pdf | 1.6 MB | Adobe PDF | 見る/開く |
タイトル: | Influence of the Axial Ligand on the Cationic Properties of the Chlorophyll Pair in Photosystem II from Thermosynechococcus vulcanus. |
著者: | Saito, Keisuke Shen, Jian-Ren Ishikita, Hiroshi |
著者名の別形: | 石北, 央 |
キーワード: | Photosystem II chlorophyll spin density distribution electron transfer redox potential P680 |
発行日: | 6-Jun-2012 |
出版者: | Elsevier Inc. |
誌名: | Biophysical journal |
巻: | 102 |
号: | 11 |
開始ページ: | 2634 |
終了ページ: | 2640 |
抄録: | Influence of the axial ligand of P(D1) chlorophyll (D1-His-198) on the E(m) of monomer chlorophylls P(D1) and P(D2), and the P(D1)(•+)/P(D2)(•+) charge ratio was investigated by theoretical calculations using the PSII crystal structure of Thermosynechococcus vulcanus analyzed at 1.9-Å resolution. It was found that the E(m)(P(D1))/E(m)(P(D2)) values and P(D1)(•+)/P(D2)(•+) ratio remained unchanged upon D1-H198Q mutation. However, E(m)(P(D1)) was increased in the D1-H198A mutant, resulting in a more even distribution of the positive charge over P(D1)/P(D2). Introduction of a water molecule as an axial ligand resulted in equal E(m) values and P(D1)(•+)/P(D2)(•+) ratios between the mutant and wild-type, thus confirming the presence of the water ligand in the mutant. |
著作権等: | © 2012 Biophysical Society. Published by Elsevier Inc. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 This is not the published version. Please cite only the published version. |
URI: | http://hdl.handle.net/2433/157230 |
DOI(出版社版): | 10.1016/j.bpj.2012.04.016 |
PubMed ID: | 22713579 |
出現コレクション: | 学術雑誌掲載論文等 |
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