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Related Experiment Videos

Two non-allelic human interferon alpha genes with identical coding regions.

K Todokoro, D Kioussis, C Weissmann

    The EMBO Journal
    |August 1, 1984
    PubMed
    Summary

    A new human interferon-alpha (IFN-alpha) gene, IFN-alpha 13, was discovered. Its high similarity to IFN-alpha 1 suggests a recent gene conversion event, with both genes active in virus-infected cells.

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    Area of Science:

    • Molecular Biology
    • Genetics
    • Immunology

    Background:

    • Human interferon-alpha (IFN-alpha) plays a crucial role in antiviral defense.
    • Understanding the diversity and evolution of IFN-alpha genes is important for immunology.

    Purpose of the Study:

    • To isolate and characterize a novel human interferon-alpha gene.
    • To investigate the evolutionary relationship between the new gene and known IFN-alpha genes.

    Main Methods:

    • Gene isolation and sequencing.
    • Sequence comparison analysis.
    • Gene expression analysis in leukocytes.

    Main Results:

    • A new human IFN-alpha gene, designated IFN-alpha 13, was identified.
    • IFN-alpha 13 shares identical coding sequences with IFN-alpha 1 but differs in non-coding regions.
    • The genes are not allelic, indicating a recent gene conversion event.
    • Both IFN-alpha 1 and IFN-alpha 13 are expressed in virus-induced leukocytes.

    Conclusions:

    • The discovery of IFN-alpha 13 expands the known human IFN-alpha gene family.
    • The high sequence similarity suggests a recent gene conversion event as the mechanism for its origin.
    • The expression of both genes in response to viral infection highlights their functional relevance in the innate immune response.

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