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  1. 数理物質系 (Faculty of Pure and Applied Sciences)
  2. 小林 正美 (Kobayashi Masami)
  1. コンテンツタイプ (Contents Type)
  2. 雑誌発表論文等 (Journal article, etc.)
  3. B~
  4. Biochimica et biophysica acta. Bioenergetics

Redox potential of chlorophyll d in vitro

http://hdl.handle.net/2241/90994
f9b20026-fccf-463a-82ab-f24fb23ce7c4
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BBA_1767-6.pdf BBA_1767-6.pdf (330.2 kB)
item type Journal Article(1)
公開日 2007-09-20
タイトル
タイトル Redox potential of chlorophyll d in vitro
言語
言語 eng
資源タイプ
タイプ journal article
著者 Kobayashi, Masami

× Kobayashi, Masami

WEKO 37373

Kobayashi, Masami

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Ohashi, Shunsuke

× Ohashi, Shunsuke

WEKO 37374

Ohashi, Shunsuke

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Iwamoto, Koji

× Iwamoto, Koji

WEKO 37375

Iwamoto, Koji

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Shiraiwa, Yoshihiro

× Shiraiwa, Yoshihiro

WEKO 37376

Shiraiwa, Yoshihiro

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Kato, Yuki

× Kato, Yuki

WEKO 37377

Kato, Yuki

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Watanabe, Tadashi

× Watanabe, Tadashi

WEKO 37378

Watanabe, Tadashi

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著者別名 小林, 正美

× 小林, 正美

WEKO 55
e-Rad 40211908
筑波大学研究者総覧 0000000784

小林, 正美

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抄録
内容記述 Chlorophyll (Chl) d is a major chlorophyll in a novel oxygenic prokaryote
Acaryochloris marina. Here we first report the redox potential of Chl d in vitro.
The oxidation potential of Chl d was +0.88 V vs. SHE in acetonitrile; the value was
higher than that of Chl a (+0.81 V) and lower than that of Chl b (+0.93 V). The
oxidation potential order, Chl b > Chl d > Chl a, can be explained by inductive effect
of substituent groups on the conjugated ;-electron system on the macrocycle.
Corresponding pheophytins showed the same order; Phe b (+ 1.25 V) > Phe d (+1.21
V) > Phe a (+1.14 V), but the values were significantly higher than those of Chls,
which are rationalized in terms of an electron density decrease in the ;-system by the
replacement of magnesium with more electronegative hydrogen. Consequently,
oxidation potential of Chl a was found to be the lowest among Chls and Phes. The
results will help us to broaden our views on photosystems in A. marina.
書誌情報 Biochimica et biophysica acta. Bioenergetics

巻 1767, 号 6, p. 596-602, 発行日 2007-06
ISSN
収録物識別子 0005-2728
書誌レコードID
収録物識別子 AA11522852
PubMed番号
関連識別子
関連識別子 17418087
DOI
関連識別子
関連識別子 10.1016/j.bbabio.2007.02.015
権利
権利情報 © 2007 Elsevier B.V.
著者版フラグ
値 author
出版者
出版者 Elsevier
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