Chromatin Structure in Telomere Dynamics
نویسندگان
چکیده
منابع مشابه
Chromatin Structure in Telomere Dynamics
The establishment of a specific nucleoprotein structure, the telomere, is required to ensure the protection of chromosome ends from being recognized as DNA damage sites. Telomere shortening below a critical length triggers a DNA damage response that leads to replicative senescence. In normal human somatic cells, characterized by telomere shortening with each cell division, telomere uncapping is...
متن کاملChromatin higher-order structure and dynamics.
The primary role of the nucleus as an information storage, retrieval, and replication site requires the physical organization and compaction of meters of DNA. Although it has been clear for many years that nucleosomes constitute the first level of chromatin compaction, this contributes a relatively small fraction of the condensation needed to fit the typical genome into an interphase nucleus or...
متن کاملStructure and dynamics of transcriptionally active chromatin.
Chromatin is a highly dynamic macromolecular complex that undergoes continuous structural modification during the various stages of genetic activity. Such dynamic behavior is the result of a complex and perfectly balanced network of interactions involving histones, DNA and ions in an aqueous environment. In the past eighteen years since the discovery of the nucleosome particle, a great deal of ...
متن کاملTelomere Dynamics in Keloids
OBJECTIVE Little is known about telomere dynamics in keloids. As keloid formation is dependent on cell replication, in theory telomeres should be shorter in keloids than in normal skin. We examined this concept in the present study. METHODS We measured by Southern blot analysis telomere length in keloids and in adjacent normal skin of 16 individuals. When available, we also measured telomere ...
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The packaging of chromatin into the nucleus of a eukaryotic cell requires an extraordinary degree of compaction and physical organization. In recent years, it has been shown that this organization is dynamically orchestrated to regulate responses to exogenous stimuli as well as to guide complex cell-type-specific developmental programs. Gene expression is regulated by the compartmentalization o...
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ژورنال
عنوان ژورنال: Frontiers in Oncology
سال: 2013
ISSN: 2234-943X
DOI: 10.3389/fonc.2013.00046