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  • Title: Evidence for posttranslational control of Hb C synthesis in an individual with Hb C trait and alpha-thalassemia.
    Author: Liebhaber SA, Cash FE, Cornfield DB.
    Journal: Blood; 1988 Feb; 71(2):502-4. PubMed ID: 3337909.
    Abstract:
    The level of Hb C in the erythrocytes of individuals with Hb C trait decreases significantly in the presence of coexisting alpha-thalassemia. This relationship may result from the higher affinity of beta A than beta C for limiting amounts of alpha-globin during hemoglobin assembly. This mechanism would predict that the beta A and beta C synthetic capacity in alpha-thalassemic individuals with Hb C trait should be balanced despite the low levels of Hb C in their circulating erythrocytes. To directly test this prediction, we have measured the beta A and beta C synthetic capacity of reticulocyte RNA isolated from two individuals with Hb C trait, one with a normal alpha-globin genotype and one with alpha-thalassemia. The balanced expression of beta A and beta C in both cases supports the proposed posttranslational control over Hb C expression.
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