Luebering-Rapoport pathway

In biochemistry, the Luebering-Rapoport pathway (also called the Luebering-Rapoport shunt) is a metabolic pathway in mature erythrocytes involving the formation of 2,3-bisphosphoglycerate (2,3-BPG), which regulates oxygen release from hemoglobin and delivery to tissues. 2,3-BPG, the reaction product of the Luebering-Rapoport pathway was first described and isolated in 1925 by the Austrian biochemist Samuel Mitja Rapoport and his technical assistant Janet Luebering.[1]

Through the Luebering-Rapoport pathway bisphosphoglycerate mutase catalyzes the transfer of a phosphoryl group from C1 to C2 of 1,3-BPG, giving 2,3-BPG. 2,3-bisphosphoglycerate, the most concentrated organophosphate in the erythrocyte, forms 3-PG by the action of bisphosphoglycerate phosphatase. The concentration of 2,3-BPG varies inversely with the pH, since it is inhibitory to catalytic action of bisphosphoglyceromutase.

References

  1. ↑ R. Juel: 2,3-Diphosphoglycerate: its role in health and disease. In: CRC Critical Reviews in Clinical Laboratory Sciences. 10(2)/1979. CRC Press, S. 113–146, ISSN 0590-8191

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