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Production of phyllo-manganates by a fungal highly-reactive enzyme and environmental bioptechnological application including rare metals recovery

Research Project

Project/Area Number 16K12619
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Environmental engineering and reduction of environmental burden
Research InstitutionAkita Prefectural University

Principal Investigator

MIYATA Naoyuki  秋田県立大学, 生物資源科学部, 教授 (20285191)

Co-Investigator(Kenkyū-buntansha) 東條 ふゆみ  秋田県立大学, 生物資源科学部, 特任助教 (90758228)
福島 淳  秋田県立大学, 生物資源科学部, 教授 (00181256)
Research Collaborator TANI Yukinori  
KITAYAMA Ayumi  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywordsマンガン酸化菌 / 真菌 / マンガン酸化酵素 / 金属回収 / 遺伝子クローニング / マンガン酸化物 / 資源金属回収 / 環境技術 / 金属資源回収 / 微生物
Outline of Final Research Achievements

The manganese(II) oxidase gene was cloned from Acremonium strictum KR21-2 and expressed heterologously in a Pichia pastoris recombinant production system. The recombinant protein oxidized manganese(II) to manganese oxides, which initially appeared as nano-sized particles and then grew to larger particles with 2.5- to 3-micrometer sizes. During the manganese oxide formation, metal cations such as zinc was incorporated into the particles, whose molar ratio to manganese reached about 30%. The result suggests that the enzymatic manganese oxidation system serves as useful tool for removal and recovery of trace metal ions from water.

Academic Significance and Societal Importance of the Research Achievements

環境中でのマンガン循環を解明するため、微生物のマンガン酸化機構が国内外で研究されている。また、微生物が作るマンガン酸化物は優れた反応特性をもち、環境・資源技術への応用が期待されている。細菌のマンガン酸化酵素を同様に解析した事例はあるが、真菌ではなく、本研究により新規性が高く、学術的に意義ある成果が得られた。さらにマンガン酸化酵素を利用した金属除去回収技術の有効性が示され、社会的意義も大きいといえる。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (2 results)

All 2017 2016

All Presentation (2 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] Identification of a fungal manganese(II) oxidase from Acremonium strictum strain KR21-22017

    • Author(s)
      N. Miyata, F. Tojo, A. Kitayama, J. Fukushima, Y. Tani
    • Organizer
      The 23rd International Symposium on Environmental Biogeochemistry (ISEB 23)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Acremonium strictum KR21-2 株が産生するマンガン酸化酵素の大量発現を目的とした酵母への遺伝子導入2016

    • Author(s)
      東條ふゆみ,北山阿有美,福島淳,谷幸則,宮田直幸
    • Organizer
      秋田応用生命科学研究会第28回講演会
    • Place of Presentation
      秋田市
    • Year and Date
      2016-12-09
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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