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. 1973 Aug;52(8):2060–2067. doi: 10.1172/JCI107390

Hemoglobin Brigham (α2Aβ2100 Pro→Leu). HEMOGLOBIN VARIANT ASSOCIATED WITH FAMILIAL ERYTHROCYTOSIS

Jacob J Lokich 1,2,3,4,5, William C Moloney 1,2,3,4,5, H Franklin Bunn 1,2,3,4,5, Sally M Bruckheimer 1,2,3,4,5, Helen M Ranney 1,2,3,4,5
PMCID: PMC302488  PMID: 4719677

Abstract

Erythrocytosis associated with the presence of a hemoglobin with increased oxygen affinity has been reported for 10 hemoglobin variants, most of which demonstrate altered electrophoretic mobility. Several members of a family were found to have erythrocytosis, and both the whole blood and the hemoglobin exhibited increased oxygen affinity. Phosphate-free hemoglobin solutions had a normal Bohr effect and reactivity to 2,3-diphosphoglycerate. The electrophoretic properties of the hemoglobin were normal, but on peptide mapping of a tryptic digest of the isolated β-chains, a normal βT11 peptide and an abnormal βT11 with greater Rf were seen. Analysis of the abnormal peptide showed the substitution of leucine for the normal proline at β100 (helical residue G2).

The hemoglobin variant, designated Hb Brigham, serves to emphasize the necessity for detailed evaluation of the structure and function of hemoglobin in familial erythrocytosis even with electrophoretically “normal” hemoglobin.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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