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[Structural basis for the functional properties of hemoglobin (author's transl)]
Annales De Biologie Clinique
|January 1, 1981
Summary
This review explains how the structure of tetrameric hemoglobin A (HbA) influences oxygen binding and transport. Erythrocytic anions modulate HbA properties for efficient oxygen delivery to tissues.
Area of Science:
- Biochemistry
- Molecular Biology
- Physiology
Context:
- Hemoglobin A (HbA) is a tetrameric protein crucial for oxygen transport in the blood.
- Understanding HbA's structure-function relationship is key to comprehending oxygen homeostasis.
- The interaction of HbA with heme and intracellular molecules affects its physiological role.
Purpose:
- To review the functional properties of tetrameric HbA.
- To explain how HbA structure influences oxygen affinity and cooperative binding.
- To elucidate the role of HbA in oxygen transport and the alkaline Bohr effect.
Summary:
- This review outlines the structural features of tetrameric HbA and its heme binding.
- It details how these structural aspects dictate oxygen affinity, cooperativity, and the alkaline Bohr effect.
- The modulation of HbA properties by erythrocytic anions like chloride and 2,3-diphosphoglycerate is discussed.
Impact:
- Provides insights into the molecular mechanisms of oxygen transport.
- Highlights the importance of HbA structure in adapting oxygen delivery to metabolic demands.
- Contributes to the understanding of physiological conditions affecting oxygen transport.