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Updated: Aug 2, 2026
06:37
Staphylococcus aureus Growth using Human Hemoglobin as an Iron Source
Published on: February 7, 2013
[Oxidation of human hemoglobin]
1Institute of Biochemistry, Academy of Sciences of Belarus.
Biokhimiia (Moscow, Russia)
|January 1, 1996
Summary
Nonreversible autooxidation of human hemoglobin accelerates with SH-group compounds and Fe2+ ions. Chemical oxidation rates and activation energy were also determined, providing insights into hemoglobin stability.
Area of Science:
- Biochemistry
- Chemical Kinetics
Context:
- Human hemoglobin is crucial for oxygen transport.
- Understanding hemoglobin oxidation is vital for diagnosing and treating related disorders.
Purpose:
- To investigate the factors influencing nonreversible autooxidation and chemical oxidation of human hemoglobin.
- To determine the kinetic parameters of hemoglobin oxidation.
Summary:
- The study examined how SH-group compounds, Fe2+ ions, and dialdehyde modifications affect hemoglobin autooxidation and oxygen affinity.
- Modification of Cys-93 beta SH-groups altered autooxidation and chemical oxidation rates.
- The activation energy for chemical oxidation above 24°C was found to be 39 ± 5 kJ/mol.
Impact:
- Provides fundamental data on hemoglobin oxidation mechanisms.
- Contributes to understanding oxidative stress in hemoglobinopathies.
- Informs potential therapeutic strategies targeting hemoglobin stability.
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