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Molecular properties of visual pigments suitable for scotopic vision

Research Project

Project/Area Number 25840120
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Animal physiology/Animal behavior
Research InstitutionUniversity of Tsukuba

Principal Investigator

SAKURAI Keisuke  筑波大学, 生命環境系, 助教 (20647317)

Project Period (FY) 2013-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywords視細胞 / オプシン / 桿体 / 錐体 / アカハライモリ / ノックインマウス / ヤツメウナギ
Outline of Final Research Achievements

Firstly, to elucidate how the property of high thermal stability of vertebrate rhodopsins is acquired during the process of molecular evolution of visual pigments, we carried out physiological analyses on chicken green cone opsin knockin mice. We found that current fluctuation in darkness of homozygous rods was considerably higher than that of wild type rods, suggesting that thermal stability of the chicken green cone opsin is extremely lower than that of rhodopsin. Secondly, we carried out single-cell recordings from isolated retina of a dark-adapted lamprey. Sensitivity of the lamprey rods was about 30 times higher than that of lamprey cones and the kinetics in the rods were considerably slower than those of the cones as observed in other vertebrate animals. Finally, we have introduced DNA vectors to express mutant cone opsins in newt photoreceptors. We confirmed that the mutant cone opsins were ectopically expressed in the newt photoreceptors.

Report

(3 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • Research Products

    (7 results)

All 2015 2014 2013

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (5 results) (of which Invited: 1 results)

  • [Journal Article] Regulation of Mammalian cone phototransduction by recoverin and rhodopsin kinase2015

    • Author(s)
      Keisuke Sakurai, Jeannie Chen, Shahrokh C. Khani and Vladimir J. Kefalov
    • Journal Title

      Journal of Biological Chemistry

      Volume: 290(14) Issue: 14 Pages: 9239-9250

    • DOI

      10.1074/jbc.m115.639591

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Cone Phosphodiesterase-6α′ Restores Rod Function and Confers Distinct Physiological Properties in the Rod Phosphodiesterase-6β-Deficient rd10Mouse2013

    • Author(s)
      Wen-Tao Deng, Keisuke Sakurai, Saravanan Kolandaivelu,Alexander V. Kolesnikov, Astra Dinculescu, Jie Li, Ping Zhu, Xuan Liu,Jijing Pang, Vince A. Chiodo, Sanford L. Boye, Bo Chang,Visvanathan Ramamurthy, Vladimir J. Kefalov, and William W. Hauswirth
    • Journal Title

      The Journal of Neuroscience

      Volume: 33(29) Issue: 29 Pages: 11745-11753

    • DOI

      10.1523/jneurosci.1536-13.2013

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] Key elements controlling the duplex vision on vertebrate evolution2015

    • Author(s)
      Keisuke sakurai
    • Organizer
      大阪大学国際シンポジウム
    • Place of Presentation
      大阪大学豊中キャンパス(大阪府豊中市)
    • Year and Date
      2015-03-20
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] Physiological analyses of mouse rods expressing chicken green cone opsin.2014

    • Author(s)
      Keisuke Sakurai, Akishi Onishi, Hiroo Imai, Osamu Chisaka. Takahiro Yamashita. Kei Nakatani and Yoshinori Shichida
    • Organizer
      The 16th International Conference on Retinal Proteins
    • Place of Presentation
      長浜ロイヤルホテル(滋賀県長浜市)
    • Year and Date
      2014-10-07 – 2014-10-11
    • Related Report
      2014 Annual Research Report
  • [Presentation] ニワトリ緑錐体視物質ノックインマウスの暗ノイズ解析2014

    • Author(s)
      櫻井啓輔、大西暁士 、今井啓雄 、千坂修、山下高廣、中谷敬、七田芳則
    • Organizer
      第18回日本光生物学協会年会
    • Place of Presentation
      大阪市立大学杉本キャンパス(大阪府大阪市)
    • Year and Date
      2014-08-22 – 2014-08-23
    • Related Report
      2014 Annual Research Report
  • [Presentation] Physiological role of M2-group cone visual pigments on photoresponse in chicken green knock-in mice2014

    • Author(s)
      Keisuke Sakurai, Akishi Onishi, Hiroo Imai, Osamu Chisaka. Takahiro Yamashita. Kei Nakatani and Yoshinori Shichida
    • Organizer
      The Association for Research in Vision and Ophthalmology
    • Place of Presentation
      米国、オーランド
    • Year and Date
      2014-05-04 – 2014-05-08
    • Related Report
      2014 Annual Research Report
  • [Presentation] ニワトリ緑色感受性錐体視物質を桿体視細胞に発現させたノックインマウスの単一視細胞応答2013

    • Author(s)
      櫻井啓輔、大西暁士 、今井啓雄 、千坂修、山下高廣、中谷敬、七田芳則
    • Organizer
      第84回日本動物学会
    • Place of Presentation
      岡山大学
    • Related Report
      2013 Research-status Report

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Published: 2014-07-25   Modified: 2019-07-29  

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