Conflicting two hypotheses on reductive selenite assimilation in Escherichia coli

• Tamura Takashi

  Department of Bioresources Chemistry, Graduate School of Natural Science and Technology, Okayama University

書誌事項

タイトル別名

• Conflicting Two Hypotheses on Reductive Selenite Assimilation in <i>Escherichia coli</i>

抄録

Selenium is a naturally occurring trace element that belongs to the group 16 of the Periodic Table. The mineral is required as an essential micronutrient for mammals, birds, reptiles, amphibians, fishes, algae, and some microorganisms including archaea. Higher plants can accumulate selenium under the circumstances where selenium is abundant in soil, but their essentiality in plants is yet to be established. Inorganic forms of selenium take one of the four oxidation states including selenate SeO₄ ^2-, selenite SeO₃ ^2-, elemental selenium Se⁰ and divalent selenide Se^2-. An activated form of divalent selenide, monoselenophosphate HSe-PO₃H₂ serves as a reactive substrate for the biogenesis of SeCys-tRNA^UGA, which is cotranslationally inserted in the growing polypeptide chain at the in-frame UGA codon. This review summarizes present understanding regarding the reductive assimilation pathway of inorganic oxyanions of selenium, and introduces confronting two hypotheses on how the selenium could be specifically reduced and efficiently utilized for monoselenophosphate synthetase.

収録刊行物

• Biomedical Research on Trace Elements

  Biomedical Research on Trace Elements 20 (3), 226-231, 2009

  日本微量元素学会

キーワード

• selenite assimilation
• formate dehydrogenase H
• thioredoxin reductase monoselenophosphate
• selenodiglutathione
• rhodanese

詳細情報

• CRID: 1390282679342366208
• NII論文ID: 130004456880
• NII論文ID: 10025620223
• NII書誌ID: AN10423256
• DOI: 10.11299/brte.20.226
• ISSN: 18801404
• ISSN: 0916717X
• NDL書誌ID: 10473672
• Web Site: http://id.ndl.go.jp/bib/10473672
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10473672
• Web Site: https://search.jamas.or.jp/link/ui/2010022573
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可