Cited by 189Hemoglobin structure and functionMetal-Catalyzed Oxygenation MechanismsHeme Oxygenase-1 and Carbon Monoxide

The Redox Activity of Hemoglobins: From Physiologic Functions to Pathologic Mechanisms

Reeder, Brandon J.·2010·Antioxidants & Redox Signaling

Abstract

Pentacoordinate respiratory hemoproteins such as hemoglobin and myoglobin have evolved to supply cells with oxygen. However, these respiratory heme proteins are also known to function as redox enzymes, reacting with compounds such as nitric oxide and peroxides. The recent discoveries of hexacoordinate hemoglobins in vertebrates and nonsymbiotic plants suggest that the redox activity of globins is inherent to the molecule. The uncontrolled formation of radical species resulting from such redox chemistry on respiratory hemoproteins can lead to oxidative damage and cellular toxicity. In this review, we examine the functions of various globins and the mechanisms by which these globins act as redox enzymes under physiologic conditions. Evidence that redox reactions also occur under disease conditions, leading to pathologic complications, also is examined, focusing on recent discoveries showing that the ferryl oxidation state of these hemoproteins is present in these disease states in vivo. In addition, we review the latest advances in the understanding of globin redox mechanisms and how they might affect cellular signaling pathways and how they might be controlled therapeutically or, in the case of hemoglobin-based blood substitutes, through rational design.

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Crossref · 10.1089/ars.2009.2974

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  • The reaction between H2O2 and both ferrous and ferric hemoglobin results in heme degradation and release of free iron.

    “Another important oxidative pathway is the reaction between H2O2 and both ferrous and ferric Hb, resulting in heme degradation and release of free iron (3), as described in detail in an older comprehensive review by Reeder (150).”

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Authors
Reeder, B. J.
Affiliations
University of Essex (GB)
Corresponding author
Reeder, Brandon J.
Venue
Antioxidants & Redox Signaling
Published
2010-10
Volume
13
Issue
7
Pages
1087-1123
ISSN
  • 1523-0864 (ISSN-L)
  • 1557-7716
OpenAlex
W2024968752
Cited by
189
References
294
Citations by year
2026: 9 · 2025: 5 · 2024: 7 · 2023: 11 · 2022: 11 · 2021: 11 · 2020: 12 · 2019: 11 · 2018: 7 · 2017: 20 · 2016: 19 · 2015: 15 · 2014: 13 · 2013: 14 · 2012: 13
FWCI
1.06
Type
journal article
Language
en
Open access
closed
Locations
  • Antioxidants and Redox Signaling (publishedVersion)
  • PubMed (publishedVersion)
  • Open Access at Essex (University of Essex) (submittedVersion)
Funders
Biotechnology and Biological Sciences Research Council
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Hemoglobin structure and function
  • Physical Sciences › Chemistry › Inorganic Chemistry › Metal-Catalyzed Oxygenation Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Heme Oxygenase-1 and Carbon Monoxide
Keywords
hemoglobin, myoglobin, globin, oxidative enzymes, heme proteins, nitric oxide, peroxides, ferryl hemoglobin, oxidative damage, cytotoxicity, signal transduction, hemoglobin-based blood substitutes, plant hemoglobin
MeSH terms
Neuroglobin, Cytoglobin, Animals, Blood Substitutes, Globins, Heme, Hemeproteins, Hemoglobins, Humans, Myoglobin, Nerve Tissue Proteins, Nitric Oxide, Oxidation-Reduction, Oxygen, Peroxides, Signal Transduction

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