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Cdc13p: a single-strand telomeric DNA-binding protein with a dual role in yeast telomere maintenance.

TitleCdc13p: a single-strand telomeric DNA-binding protein with a dual role in yeast telomere maintenance.
Publication TypeJournal Article
Year of Publication1996
AuthorsNugent CI, Hughes TR, Lue NF, Lundblad V
JournalScience
Volume274
Issue5285
Pagination249-52
Date Published1996 Oct 11
ISSN0036-8075
KeywordsAlleles, Base Sequence, Cloning, Molecular, Cyclin B, Cyclins, DNA, Fungal, DNA, Single-Stranded, DNA-Binding Proteins, Fungal Proteins, Genes, Fungal, Molecular Sequence Data, Mutation, Phenotype, Saccharomyces cerevisiae, Saccharomyces cerevisiae Proteins, Telomerase, Telomere
Abstract

The CDC13 gene has previously been implicated in the maintenance of telomere integrity in Saccharomyces cerevisiae. With the use of two classes of mutations, here it is shown that CDC13 has two discrete roles at the telomere. The cdc13-2est mutation perturbs a function required in vivo for telomerase regulation but not in vitro for enzyme activity, whereas cdc13-1ts defines a separate essential role at the telomere. In vitro, purified Cdc13p binds to single-strand yeast telomeric DNA. Therefore, Cdc13p is a telomere-binding protein required to protect the telomere and mediate access of telomerase to the chromosomal terminus.

DOI10.1126/science.274.5285.249
Alternate JournalScience
PubMed ID8824190

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