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@article{1636239, author = {Eberhard, S. and Valuchová, Soňa and Ravat, J. and Fulneček, Jaroslav and Jolivet, P. and Bujaldon, S. and Lemaire, S.D. and Wollman, F.A. and Teixeira, M.T. and Říha, Karel and Xu, Z.}, article_location = {COLD SPRING HARBOR}, article_number = {3}, doi = {http://dx.doi.org/10.26508/lsa.201900315}, keywords = {GENOME-WIDE SCREEN; LENGTH REGULATION; CATALYTIC SUBUNIT; ARABIDOPSIS; YEAST; SEQUENCE; ELONGATION; MECHANISM; EVOLUTION; REPEATS}, language = {eng}, issn = {2575-1077}, journal = {LIFE SCIENCE ALLIANCE}, title = {Molecular characterization of Chlamydomonas reinhardtii telomeres and telomerase mutants}, url = {https://www.life-science-alliance.org/content/2/3/e201900315}, volume = {2}, year = {2019} }
TY - JOUR ID - 1636239 AU - Eberhard, S. - Valuchová, Soňa - Ravat, J. - Fulneček, Jaroslav - Jolivet, P. - Bujaldon, S. - Lemaire, S.D. - Wollman, F.A. - Teixeira, M.T. - Říha, Karel - Xu, Z. PY - 2019 TI - Molecular characterization of Chlamydomonas reinhardtii telomeres and telomerase mutants JF - LIFE SCIENCE ALLIANCE VL - 2 IS - 3 SP - 1-15 EP - 1-15 PB - LIFE SCIENCE ALLIANCE LLC SN - 25751077 KW - GENOME-WIDE SCREEN KW - LENGTH REGULATION KW - CATALYTIC SUBUNIT KW - ARABIDOPSIS KW - YEAST KW - SEQUENCE KW - ELONGATION KW - MECHANISM KW - EVOLUTION KW - REPEATS UR - https://www.life-science-alliance.org/content/2/3/e201900315 L2 - https://www.life-science-alliance.org/content/2/3/e201900315 N2 - Telomeres are repeated sequences found at the end of the linear chromosomes of most eukaryotes and are required for chromosome integrity. Expression of the reverse-transcriptase telomerase allows for extension of telomeric repeats to counteract natural telomere shortening. Although Chlamydomonas reinhardtii, a photosynthetic unicellular green alga, is widely used as a model organism in photosynthesis and flagella research, and for biotechnological applications, the biology of its telomeres has not been investigated in depth. Here, we show that the C. reinhardtii (TTTTAGGG)(n) telomeric repeats are mostly nondegenerate and that the telomeres form a protective structure, with a subset ending with a 3' overhang and another subset presenting a blunt end. Although telomere size and length distributions are stable under various standard growth conditions, they vary substantially between 12 genetically close reference strains. Finally, we identify CrTERT, the gene encoding the catalytic subunit of telomerase and show that telomeres shorten progressively in mutants of this gene. Telomerase mutants eventually enter replicative senescence, demonstrating that telomerase is required for long-term maintenance of telomeres in C. reinhardtii. ER -
EBERHARD, S., Soňa VALUCHOVÁ, J. RAVAT, Jaroslav FULNEČEK, P. JOLIVET, S. BUJALDON, S.D. LEMAIRE, F.A. WOLLMAN, M.T. TEIXEIRA, Karel ŘÍHA a Z. XU. Molecular characterization of Chlamydomonas reinhardtii telomeres and telomerase mutants. \textit{LIFE SCIENCE ALLIANCE}. COLD SPRING HARBOR: LIFE SCIENCE ALLIANCE LLC, 2019, roč.~2, č.~3, s.~1-15. ISSN~2575-1077. Dostupné z: https://dx.doi.org/10.26508/lsa.201900315.
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