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Clustered genes for human U2 RNA.

G Westin, J Zabielski, K Hammarström

    Proceedings of the National Academy of Sciences of the United States of America
    |June 1, 1984
    PubMed
    Summary
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    The human genome contains tandem repeats that host genes for small nuclear RNA U2. These repeats are organized into large clusters within the genome.

    Area of Science:

    • Genomics
    • Molecular Biology
    • Gene Organization

    Background:

    • Small nuclear RNAs (snRNAs) are crucial for various cellular processes, including RNA splicing.
    • The U2 snRNA gene is essential for the spliceosome, a key molecular machine in eukaryotes.

    Purpose of the Study:

    • To investigate the genomic organization of human small nuclear RNA U2 (U2 snRNA) genes.
    • To determine the copy number and arrangement of U2 snRNA genes in the human genome.

    Main Methods:

    • Analysis of human genomic DNA.
    • Identification and characterization of tandem repeat sequences containing U2 snRNA genes.

    Main Results:

    • Human U2 snRNA genes are located within 6.2-kilobase-pair tandem repeats.

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  • The haploid human genome contains approximately 20 copies of these repeats.
  • These repeats are predominantly organized into one or a few large genomic clusters.

    • Conclusions:

    • The human U2 snRNA gene family exhibits a clustered organization within the genome.
    • Tandem repeats serve as the structural units for U2 snRNA gene arrays.
    • Understanding this organization provides insights into gene regulation and genome evolution.