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Related Experiment Videos

The prothrombin gene and serine proteinase evolution.

S J Degen, E W Davie

    Annals of the New York Academy of Sciences
    |January 1, 1986
    PubMed
    Summary

    Researchers isolated the human prothrombin gene, revealing it

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    Hemophilic factor VIII C1- and C2-domain missense mutations and their modeling to the 1.5-angstrom human C2-domain crystal structure.

    Blood·2000

    Area of Science:

    • Molecular Biology
    • Genetics
    • Human Genomics

    Background:

    • Prothrombin is a crucial protein in the blood coagulation cascade.
    • Understanding the structure of the human prothrombin gene provides insights into its regulation and evolution.

    Purpose of the Study:

    • To isolate and characterize the gene encoding human prothrombin.
    • To investigate the genomic structure, including introns and exons, of the human prothrombin gene.

    Main Methods:

    • Isolation of the human prothrombin gene from genomic DNA libraries.
    • Utilized human prothrombin complementary DNA (cDNA) as a probe for gene identification.

    Main Results:

    • The human prothrombin gene is approximately 24 kb long, with 90% being non-coding intervening sequences (introns).
    • Thirteen introns interrupt the coding sequence into 14 exons, with significant size variation among introns.
    • At least 11 copies of Alu repetitive DNA were identified within the introns.
    • Intron positions correlate with functional and structural domains of the prothrombin protein.

    Conclusions:

    • The genomic organization of the human prothrombin gene, with its numerous introns, offers insights into gene regulation.
    • The observed intron-exon structure and repetitive DNA elements contribute to our understanding of gene evolution.
    • Conserved intron positions in homologous genes suggest a common evolutionary origin for prothrombin and related proteins.

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