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Study on the molecular mechanisms for reduction/degradation of organoarsenicals by soil bacteria and higher animals

Research Project

Project/Area Number 15H06274
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Applied microbiology
Research InstitutionNagoya University

Principal Investigator

Yoshinaga Masafumi  名古屋大学, 医学系研究科, 特任助教 (80754978)

Project Period (FY) 2015-08-28 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords応用微生物 / 環境 / 細菌 / 有機ヒ素分解 / 応用微生物学
Outline of Final Research Achievements

Organoarsenicals have been used for agricultural purposes in various countries. However, because they are degraded by microbes into more toxic inorganic arsenicals in the environment, spreading of the environmental pollution by the continued uses has been concerned. Although metabolisms of organoarsenicals have been reported also in higher animals, the molecular mechanisms either for microbes or animals have not been well understood yet. In this study, therefore, I attempted to identify novel genes related to organoarsenical degradation. Although no novel genes were identified, I could identify a new additional step for degradation pathways for specific organoarsenicals by microbes. In addition, I performed further biochmical and structural biological analyses on the organoarsenical degrading enzyme that I previously identified and clarified the detail of the unique reaction mechanism at molecular level.

Report

(3 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Annual Research Report
  • Research Products

    (3 results)

All 2016 2015

All Journal Article (2 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 2 results,  Acknowledgement Compliant: 2 results) Presentation (1 results)

  • [Journal Article] Uranium in well drinking water of Kabul, Afghanistan and its effective, low-cost depuration using Mg-Fe based hydrotalcite-like compounds.2016

    • Author(s)
      Masashi Kato, Mohammad Daud Azimi, Said Hafizullah Fayaz, Muhammad Dawood Shah, Md. Zahirul Hoque, Nobuyuki Hamajima, Shoko Ohnuma, Tomomi Ohtsuka, Masao Maeda, Masafumi Yoshinaga
    • Journal Title

      Chemosphere

      Volume: 165 Pages: 27-32

    • DOI

      10.1016/j.chemosphere.2016.08.124

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Structure of the ArsI C-As Lyase: Insights into the Mechanism of Degradation of Organoarsenical Herbicides and Growth Promoters2016

    • Author(s)
      Venkadesh Sarkarai Nadar, Masafumi Yoshinaga, Shashank S. Pawitwar, Palani Kandavelu, Banumathi Sankaran, Barry P. Rosen
    • Journal Title

      Journal of Molecular Biology

      Volume: 428 Issue: 11 Pages: 2462-2473

    • DOI

      10.1016/j.jmb.2016.04.022

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Presentation] A C-As lyase for degradation of environmental organoarsenical herbicides and animal husbandry growth promoters2015

    • Author(s)
      Masafumi Yoshinaga, Tomomi Otsuka, Mari Hasegawa, Hayata Yamamoto, Barry P. Rosen, Masashi Kato
    • Organizer
      第5回名古屋大学・生理学研究所合同シンポ
    • Place of Presentation
      生理学研究所(愛知県岡崎市)
    • Year and Date
      2015-09-19
    • Related Report
      2015 Annual Research Report

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Published: 2015-08-26   Modified: 2018-03-22  

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