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Hemoglobin
international journal for hemoglobin research
Volume 7, 1983 - Issue 4
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Original Article

Two Unstable Hemoglobins in One Individual: Hb Atlanta (β75 Leu→Pro) and Hb Coventry (β141 Leu deleted)

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Pages 303-312 | Received 08 Feb 1983, Accepted 05 Apr 1983, Published online: 07 Jul 2009
 

Abstract

A 25-year-old male had a life long history of a hemolytic anemia which was shown to be due to the presence of an unstable hemoglobin, Hb Atlanta β75 Leu4→Pro. Two dimensional peptide maps of isopropanol precipitated globin also showed the presence of a second variant, Hb Coventry β141 Leu deleted. HPLC separation of the tryptic peptides consistently demonstrated both the abnormal and normal β9 and β14 peptides in the digest of total globin. Neither of the abnormal peptides was apparent on similar maps of globin from his parents or his two siblings. The proportion of the variants measured from the peptide maps was 11% β-Coventry, 34% β-Atlanta and the remainder β-A. The possible basis for the presence of three 6β-globins is discussed and it is concluded that this is likely to be due to some mechanism other than a β-δ crossover.

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