Search: onr:"swepub:oai:DiVA.org:umu-66608" >
Telomere Length Hom...
Telomere Length Homeostasis Responds to Changes in Intracellular dNTP Pools
- Article/chapterEnglish2013
Publisher, publication year, extent ...
-
2013-04-01
-
The Genetics Society,2013
-
printrdacarrier
Numbers
-
LIBRIS-ID:oai:DiVA.org:umu-66608
-
https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-66608URI
-
https://doi.org/10.1534/genetics.112.149120DOI
Supplementary language notes
-
Language:English
-
Summary in:English
Part of subdatabase
Classification
-
Subject category:ref swepub-contenttype
-
Subject category:art swepub-publicationtype
Notes
-
Telomeres, the ends of linear eukaryotic chromosomes, shorten due to incomplete DNA replication and nucleolytic degradation. Cells counteract this shortening by employing a specialized reverse transcriptase called telomerase, which uses deoxyribonucleoside triphosphates (dNTPs) to extend telomeres. Intracellular dNTP levels are tightly regulated and perturbation of these levels is known to affect DNA synthesis. We examined whether altering the levels of the dNTP pools or changing the relative ratios of the four dNTPs in Saccharomyces cerevisiae would affect the length of the telomeres. Lowering dNTP levels leads to a modest shortening of telomeres, while increasing dNTP pools has no significant effect on telomere length. Strikingly, altering the ratio of the four dNTPs dramatically affects telomere length homeostasis, both positively and negatively. Specifically, we find that intracellular dGTP levels positively correlate with both telomere length and telomerase nucleotide addition processivity in vivo. Our findings are consistent with in vitro data showing dGTP-dependent stimulation of telomerase activity in multiple organisms, and suggest that telomerase activity is modulated in vivo by dGTP levels.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
-
Sharma, SushmaUmeå universitet,Institutionen för medicinsk kemi och biofysik(Swepub:umu)sush0003
(author)
-
Reichenbach, Patrick
(author)
-
Marjavaara, LisetteUmeå universitet,Institutionen för medicinsk kemi och biofysik(Swepub:umu)lietoa93
(author)
-
Nilsson, Anna KarinUmeå universitet,Institutionen för medicinsk kemi och biofysik(Swepub:umu)anni0002
(author)
-
Lingner, Joachim
(author)
-
Chabes, AndreiUmeå universitet,Institutionen för medicinsk kemi och biofysik(Swepub:umu)anch0002
(author)
-
Rothstein, Rodney
(author)
-
Chang, Michael
(author)
-
Umeå universitetInstitutionen för medicinsk kemi och biofysik
(creator_code:org_t)
Related titles
-
In:Genetics: The Genetics Society193:4, s. 1095-11050016-67311943-2631
Internet link
Find in a library
-
Genetics
(Search for host publication in LIBRIS)
To the university's database