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  1. 010 学術雑誌論文
  2. 渡辺, 正勝 / WATANABE, Masakatsu

Kinetic analysis of the activation of photoactivated adenylyl cyclase (PAC), a blue-light receptor for photomovements of Euglena

https://ir.soken.ac.jp/records/3886
https://ir.soken.ac.jp/records/3886
864ce08d-415b-463c-95c0-ae04a4a1f58e
名前 / ファイル ライセンス アクション
b417212d.pdf b417212d (208.2 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2013-08-13
タイトル
タイトル Kinetic analysis of the activation of photoactivated adenylyl cyclase (PAC), a blue-light receptor for photomovements of Euglena
タイトル
言語 en
タイトル Kinetic analysis of the activation of photoactivated adenylyl cyclase (PAC), a blue-light receptor for photomovements of Euglena
言語
言語 eng
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
資源タイプ journal article
著者 YOSHIKAWA, Shinya

× YOSHIKAWA, Shinya

WEKO 1861

YOSHIKAWA, Shinya

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SUZUKI, Takeshi

× SUZUKI, Takeshi

WEKO 1822

SUZUKI, Takeshi

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WATANABE, Masakatsu

× WATANABE, Masakatsu

WEKO 346

WATANABE, Masakatsu

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ISEKI, Mineo

× ISEKI, Mineo

WEKO 824

ISEKI, Mineo

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著者別名 渡辺, 正勝

× 渡辺, 正勝

WEKO 345
NRID 1000040124226
e-Rad 40124226

渡辺, 正勝

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抄録
内容記述タイプ Abstract
内容記述 Photoactivated adenylyl cyclase (PAC) was first purified from a photosensing organelle (the paraflagellar body) of the unicellular flagellate Euglena gracilis, and is regarded as the photoreceptor for the step-up photophobic response. Here, we report the kinetic properties of photoactivation of PAC and a change in intracellular cAMP levels upon blue light irradiation. Activation of PAC was dependent both on photon fluence rate and duration of irradiation, between which reciprocity held well in the range of 2-50 μmol m-2 s-1 (total fluence of 1200 μmol m-2). Intermittent irradiation also caused activation of PAC in a photon fluence-dependent manner irrespective of cycle periods. Wavelength dependency of PAC activation showed prominent peaks in the UV-B/C, UV-A and blue regions of the spectrum. The time course of the changes in intracellular cAMP levels corresponded well with that of the step-up photophobic response. From this and the kinetic properties of PAC photoactivation, we concluded that an increase in intracellular cAMP levels evoked by photoactivation of PAC is a key event of the step-up photophobic response.
書誌情報 Photochemical and Photobiological Sciences
en : Photochemical and Photobiological Sciences

巻 4, 号 9, p. 727-731, 発行日 2005-09
出版者
出版者 Royal Society of Chemistry
ISSN
収録物識別子タイプ ISSN
収録物識別子 1474905X
PubMed番号
関連タイプ isIdenticalTo
識別子タイプ PMID
関連識別子 16121284
DOI
関連タイプ isIdenticalTo
識別子タイプ DOI
関連識別子 http://doi.org/10.1039/b417212d
関連名称 10.1039/b417212d
権利
権利情報 © The Royal Society of Chemistry and Owner Societies 2005
関連サイト
識別子タイプ URI
関連識別子 http://www.rsc.org/AboutUs/Copyright/LicencetoPublishforjournals.asp
関連名称 Copyright
フォーマット
内容記述タイプ Other
内容記述 application/pdf
著者版フラグ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
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