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2017 ; 8
(ä): 67
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Ubiquitination and SUMOylation in Telomere Maintenance and Dysfunction
#MMPMID28588610
Yalçin Z
; Selenz C
; Jacobs JJL
Front Genet
2017[]; 8
(ä): 67
PMID28588610
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Telomeres are essential nucleoprotein structures at linear chromosomes that
maintain genome integrity by protecting chromosome ends from being recognized and
processed as damaged DNA. In addition, they limit the cell's proliferative
capacity, as progressive loss of telomeric DNA during successive rounds of cell
division eventually causes a state of telomere dysfunction that prevents further
cell division. When telomeres become critically short, the cell elicits a DNA
damage response resulting in senescence, apoptosis or genomic instability,
thereby impacting on aging and tumorigenesis. Over the past years substantial
progress has been made in understanding the role of post-translational
modifications in telomere-related processes, including telomere maintenance,
replication and dysfunction. This review will focus on recent findings that
establish an essential role for ubiquitination and SUMOylation at telomeres.