Cited by 923Organoselenium and organotellurium chemistrySelenium in Biological SystemsRedox biology and oxidative stress

Why Nature Chose Selenium

Reich, Hans J., Hondal, Robert J.·2016·ACS Chemical Biology

Abstract

The authors were asked by the Editors of ACS Chemical Biology to write an article titled "Why Nature Chose Selenium" for the occasion of the upcoming bicentennial of the discovery of selenium by the Swedish chemist Jöns Jacob Berzelius in 1817 and styled after the famous work of Frank Westheimer on the biological chemistry of phosphate [Westheimer, F. H. (1987) Why Nature Chose Phosphates, Science 235, 1173-1178]. This work gives a history of the important discoveries of the biological processes that selenium participates in, and a point-by-point comparison of the chemistry of selenium with the atom it replaces in biology, sulfur. This analysis shows that redox chemistry is the largest chemical difference between the two chalcogens. This difference is very large for both one-electron and two-electron redox reactions. Much of this difference is due to the inability of selenium to form π bonds of all types. The outer valence electrons of selenium are also more loosely held than those of sulfur. As a result, selenium is a better nucleophile and will react with reactive oxygen species faster than sulfur, but the resulting lack of π-bond character in the Se-O bond means that the Se-oxide can be much more readily reduced in comparison to S-oxides. The combination of these properties means that replacement of sulfur with selenium in nature results in a selenium-containing biomolecule that resists permanent oxidation. Multiple examples of this gain of function behavior from the literature are discussed.

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Crossref · 10.1021/acschembio.6b00031

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Authors
Reich, H. J., & Hondal, R. J.
Affiliations
  • University of Wisconsin–Madison (US)
  • University of Vermont (US)
Corresponding author
  • Reich, Hans J.
  • Hondal, Robert J.
Venue
ACS Chemical Biology
Published
2016-03-21
Volume
11
Issue
4
Pages
821-841
ISSN
  • 1554-8929 (ISSN-L)
  • 1554-8937
OpenAlex
W2294386056
Cited by
923
References
269
Citations by year
2026: 84 · 2025: 115 · 2024: 113 · 2023: 111 · 2022: 117 · 2021: 84 · 2020: 79 · 2019: 76 · 2018: 81 · 2017: 49 · 2016: 13
FWCI
11.13
Type
journal article
Language
en
Open access
closed
Locations
  • ACS Chemical Biology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Vanderbilt University
  • University of Vermont
  • Università degli Studi dell'Aquila
Topics
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Toxicology › Organoselenium and organotellurium chemistry
  • Health Sciences › Nursing › Nutrition and Dietetics › Selenium in Biological Systems
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
Keywords
selenium, sulfur, chalcogens, redox chemistry, π-bonding, nucleophilicity, reactive oxygen species, oxidation resistance
MeSH terms
Deficiency Diseases, Humans, Neoplasms, Selenium, Nature

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