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- W2129696543 abstract "Telomerase is an RNA-protein complex responsible for extending one strand of the telomere terminal repeats. Analysis of the telomerase complex in budding yeasts has revealed the presence of one catalytic protein subunit (Est2p/TERT) and at least two noncatalytic components (Est1p and Est3p). The TERT subunit is essential for telomerase catalysis, while the functions of Est1p and Est3p have not been precisely elucidated. In an earlier study, we showed that telomerase derived from a Candida est1-null mutant is defective in primer utilization in vitro; it exhibits reduced initiation and processivity on primers that terminate in two regions of the telomere repeat. Here we show that telomerase derived from a Candida est3-null mutant has nearly identical defects in primer utilization and processivity. Further analysis revealed an unexpected mutual dependence of Est1p and Est3p in their assembly into the full telomerase complex, which accounts for the similarity between the mutant enzymes. We also developed an affinity isolation and an in vitro reconstitution protocol for the telomerase complex that will facilitate future mechanistic studies." @default.
- W2129696543 created "2016-06-24" @default.
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- W2129696543 creator A5052295581 @default.
- W2129696543 creator A5053361953 @default.
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- W2129696543 date "2007-08-01" @default.
- W2129696543 modified "2023-09-26" @default.
- W2129696543 title "Mutual Dependence of <i>Candida albicans</i> Est1p and Est3p in Telomerase Assembly and Activation" @default.
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- W2129696543 doi "https://doi.org/10.1128/ec.00069-07" @default.
- W2129696543 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/1951134" @default.
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