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2012 Fiscal Year Final Research Report

Molecular mechanisms of the activation of the nitrogen transporter in cyanobacteria

Research Project

  • PDF
Project/Area Number 22770034
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Plant molecular biology/Plant physiology
Research InstitutionNagoya University

Principal Investigator

MAEDA Shin-ichi  名古屋大学, 生命農学研究科, 助教 (70335016)

Project Period (FY) 2010 – 2012
Keywordsラン藻 / 輸送体 / 活性制御
Research Abstract

We analyzed the molecular mechanisms of the regulatory systems of three kinds ofnitrogen transporters (LtnT, CynABD, FocA) in cyanobacteria. We identified a novel protein (LtnE) that is involved in the activation of the LtnT transporter in a freshwater cyanobacterium. We clarified that the PII protein, which was a regulatory protein of various nitrogen assimilation proteins, was involved in the regulation of the activity of the CynABD transporter. We clarified that the C-terminal region of the FocA transporter inhibited the transport activity of the transporter and the FocA transport activity could be inactivated in the presence of ammonium in the medium. In addition, we established the culture method of a marine cyanobacterium and clarified that there was an unknownnitrite transport mechanism in the marine cyanobacterium.

  • Research Products

    (6 results)

All 2013 2012 2011

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

  • [Journal Article] Regulation of nitrate assimilation in cyanobacteria.2011

    • Author(s)
      Ohashi Y, Shi W, Takatani N, Aichi M, Maeda S, Watanabe S, Yoshikawa H, Omata T
    • Journal Title

      Journal of Experimental Botany

      Volume: 62 Pages: 1411-1424

    • Peer Reviewed
  • [Presentation] 海洋性ラン藻の亜硝酸イオン輸送体の機能解析2013

    • Author(s)
      前田真一、村上明男、伊藤寿、田中歩、小俣達男
    • Organizer
      第54回日本植物生理学会年会
    • Place of Presentation
      岡山
    • Year and Date
      2013-03-23
  • [Presentation] Effects of PII deficiency on growth of Synechococcus elongatus PCC 79422013

    • Author(s)
      Yajun Chang, Nobuyuki Takatani, Makiko Aichi, Shin-ichi Maeda, Tatsuo Omata
    • Organizer
      第54回日本植物生理学会年会
    • Place of Presentation
      岡山
    • Year and Date
      2013-03-22
  • [Presentation] Nitrite transport activity of theABC-type cyanate transporter of the cyanobacterium Synechococcus elongatusPCC 79422012

    • Author(s)
      Shin-ichi Maeda and Tatsuo Omata
    • Organizer
      14th International Symposium on Phototrophic Prokaryotes
    • Place of Presentation
      Porto, Portugal
    • Year and Date
      2012-08-08
  • [Presentation] Regulation of the CynABD cyanate/nitrite transporter in a PII-deficiencymutant of Synechococcus elongatus PCC 79422012

    • Author(s)
      Yajun Chang, Nobuyuki Takatani, Makiko Aichi, Shin-ichi Maeda, Tatsuo Omata
    • Organizer
      第53回日本植物生理学会年会
    • Place of Presentation
      京都
    • Year and Date
      2012-03-16
  • [Presentation] 海洋性ラン藻の亜硝酸イオン輸送体の構造と機能の解析2011

    • Author(s)
      前田真一、村上明男、伊藤寿、田中歩、小俣達男
    • Organizer
      第52回日本植物生理学会年会
    • Year and Date
      2011-03-20

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Published: 2014-08-29  

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