Heterogeneity of the molecular basis of hereditary pyropoikilocytosis and hereditary elliptocytosis associated with increased levels of the spectrin alpha I/74-kilodalton tryptic peptide.

Abstract excerpt

Hereditary pyropoikilocytosis (HPP) and hereditary elliptocytosis are closely related, congenital disorders of the red blood cell usually associated with defective spectrin self-association and abnormal limited tryptic digestion of the N-terminal of domain of spectrin. Enhanced cleavage by trypsin of spectrin from affected individuals at arginyl residue 45* and lysyl residue 48* frequently yields increased...

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