論文

査読有り 国際誌
2020年2月10日

Direct Recovery of the Rare Earth Elements Using a Silk Displaying a Metal-Recognizing Peptide.

Molecules (Basel, Switzerland)
  • Nobuhiro Ishida
  • ,
  • Takaaki Hatanaka
  • ,
  • Yoichi Hosokawa
  • ,
  • Katsura Kojima
  • ,
  • Tetsuya Iizuka
  • ,
  • Hidetoshi Teramoto
  • ,
  • Hideki Sezutsu
  • ,
  • Tsunenori Kameda

25
3
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.3390/molecules25030761

Rare earth elements (RE) are indispensable metallic resources in the production of advanced materials; hence, a cost- and energy-effective recovery process is required to meet the rapidly increasing RE demand. Here, we propose an artificial RE recovery approach that uses a functional silk displaying a RE-recognizing peptide. Using the piggyBac system, we constructed a transgenic silkworm in which one or two copies of the gene coding for the RE-recognizing peptide (Lamp1) was fused with that of the fibroin L (FibL) protein. The purified FibL-Lamp1 fusion protein from the transgenic silkworm was able to recognize dysprosium (Dy3+), a RE, under physiological conditions. This method can also be used with silk from which sericin has been removed. Furthermore, the Dy-recovery ability of this silk was significantly improved by crushing the silk. Our simple approach is expected to facilitate the direct recovery of RE from an actual mixed solution of metal ions, such as seawater and industrial wastewater, under mild conditions without additional energy input.

リンク情報
DOI
https://doi.org/10.3390/molecules25030761
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/32050621
PubMed Central
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7037070
ID情報
  • DOI : 10.3390/molecules25030761
  • PubMed ID : 32050621
  • PubMed Central 記事ID : PMC7037070

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