Abstract
Hb. Heathrow [beta 103(G5)Phe- greater than Leu] was identified in an Englishman with a life-long history of polycythemia, his father had been similarly affected. A hemoglobin variant was suspected from the high oxygen affinity of the patient's blood. The Hb Heathrow abnormal beta chain was resolved from the normal beta chain by high performance liquid chromatography, and the abnormal peptide and the amino acid replacement were identified by mass spectrometry. The corresponding base change (C- greater than G at codon 103) was demonstrated by sequence analysis of the polymerase chain reaction amplified exon 2 of the genomic beta-globin gene. This is only the third known instance of Hb Heathrow.
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