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    Telomere Position Effect in Human Cells

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    Date
    2003-04-01
    Author
    Baur, Joseph Anthony
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    Abstract

    Telomeres are tracts of repetitive DNA that cap the ends of linear chromosomes. Each time the chromosome is duplicated, a small amount of telomeric DNA is lost from the end due to factors inherent in the mechanism of DNA replication. The result is a net shortening of telomeres with each cell division, unless new repeats are synthesized through the action of the enzyme telomerase. Most human somatic cells lack telomerase activity and so continued cell division leads to telomere shortening. After a limited number of divisions (the "Hayflick limit"), it is believed that a few critically shortened telomeres trigger a state of growth arrest termed replicative senescence.

    Subject
    Telomeres
    DNA Replication
    Humans
    URI
    https://hdl.handle.net/2152.5/459
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    UT Southwestern Health Sciences Digital Library and Learning Center | 5323 Harry Hines Boulevard, Dallas, Texas 75390-9049
    Telephone 214-648-2001 | Email
    Library Home | UT Southwestern Home
    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    TDL
    Theme by 
    Atmire NV