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Related Experiment Videos

[Primary structure of abnormal E-like hemoglobin].

V A Spivak, T P Molchanova, N V Ermakov

    Biokhimiia (Moscow, Russia)
    |May 1, 1979
    PubMed
    Summary

    Researchers identified Hemoglobin E, an abnormal variant, in a patient and family member. This marks the first detection of Hemoglobin E (HbE) in the USSR, aiding hematological diagnostics.

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    Area of Science:

    • Hematology
    • Biochemistry
    • Genetics

    Context:

    • Abnormal hemoglobins can cause various hematological disorders.
    • Acetate cellulose electrophoresis and ion-exchange chromatography are standard methods for hemoglobin analysis.
    • Peptide mapping is crucial for characterizing globin chain variants.

    Purpose:

    • To identify and characterize an abnormal hemoglobin variant in a patient and their family.
    • To report the first identification of Hemoglobin E (HbE) in the USSR.
    • To detail the methods used for structural elucidation of the abnormal beta-globin chain.

    Summary:

    • An E-like abnormal hemoglobin, identified as Hemoglobin E (HbE) with a specific amino acid substitution (26Glu to Lys in the beta-chain), was detected in a hematological patient and a family member.
    • Acetate cellulose electrophoresis was used to characterize hemolyzates, and ion-exchange chromatography on CM-cellulose isolated the abnormal beta-chain.
    • Peptide mapping of trypsin hydrolysates identified the substitution in peptide beta T3, with amino acid analysis confirming the locus and type of substitution.

    Impact:

    • This finding represents the first documented case of Hemoglobin E in the USSR.
    • The identification aids in understanding the prevalence and distribution of hemoglobinopathies.
    • Establishes a basis for further hematological research and diagnostic capabilities within the region.

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