ホヤの金属濃縮機構と海水中のレアメタルの選択的分取への応用  [in Japanese] Metal Accumulation Mechanisms in Ascidians and its Application to Selective Accumulation of Rare Metals in Seawater  [in Japanese]

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Author(s)

    • 道端 齊 MICHIBATA Hitoshi
    • 広島大学大学院理学研究科生物科学専攻 Molecular Physiological Laboratory, Graduate School of Science, Hiroshima University
    • 植木 龍也 UEKI Tatsuya
    • 広島大学大学院理学研究科生物科学専攻 Molecular Physiological Laboratory, Graduate School of Science, Hiroshima University

Abstract

Rare metals such as vanadium and cobalt are dissolved in seawater at very low concentrations. Ascidians are known to accumulate extremely high levels of vanadium selectively. Vanadium is accumulated mainly in one type of their blood cells, and the concentration reaches 350 mM corresponding to10<SUP>7</SUP>times that in seawater. Recently, we isolated vanadium-binding proteins, Vanabinl-5, from an vanadium-rich ascidian, <I>Ascidia sydneiensis samea</I>. Biochemical and structural analyses revealed that Vanabins make a novel protein family which is characterized by 18 conserved cysteine motif. They are thought to act as metal chaperones in ascidian blood cells. Vanabins can be used as an agent for selective bioaccumulation and biosorption of heavy metals.

Journal

  • Bulletin of the Society of Sea Water Science, Japan

    Bulletin of the Society of Sea Water Science, Japan 59(5), 326-331, 2005-10-01

    The Society of Sea Water Science, Japan

References:  38

Codes

  • NII Article ID (NAID)
    10016125538
  • NII NACSIS-CAT ID (NCID)
    AN0018645X
  • Text Lang
    JPN
  • Article Type
    REV
  • ISSN
    03694550
  • NDL Article ID
    7684255
  • NDL Source Classification
    ZM44(科学技術--地球科学--海洋・陸水・火山) // ZP8(科学技術--化学・化学工業--無機化学・無機化学工業)
  • NDL Call No.
    Z15-47
  • Data Source
    CJP  NDL  J-STAGE 
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