Now showing items 1-10 of 30
The mouse telomerase RNA 5"-end lies just upstream of the telomerase template sequence
(Oxford University Press, 1998-01-15)
Telomerase is a ribonucleoprotein enzyme with an essential RNA component. Embedded within the telomerase RNA is a template sequence for telomere synthesis. We have characterized the structure of the 5' regions of the human ...
Identification of a Specific Telomere Terminal Transferase Activity in Tetrahymena Extracts
(Cell Press, 1985-12)
We have found a novel activity in Tetrahymena cell free extracts that adds tandem TTGGGG repeats onto synthetic telomere primers. The single-stranded DNA oligonucleotides (TTGGGG)4 and TGTGTGGGTGTGTGGGTGTGTGGG, consisting ...
Short telomeres and ataxia-telangiectasia mutated deficiency cooperatively increase telomere dysfunction and suppress tumorigenesis
(American Association of Cancer Research, 2003-12-01)
To examine the role of ataxia-telangiectasia mutated (Atm) in telomere function, we generated Atm and telomerase null mice (Atm(-/-) mTR(-/-) iG6 mice). These mice exhibited increased germ cell death and chromosome fusions ...
Human telomerase RNA and telomerase activity in immortal cell lines and tumor tissues
(American Association of Cancer Research, 1996-02-01)
Telomerase activity has been detected in many human immortal cells lines and in tumor tissues, whereas it is generally absent from primary cell strains and from many tumor adjacent tissue samples. With the recently cloned ...
Phosphorylation of H2AX at short telomeres in T cells and fibroblasts
(American Society for Biochemistry and Molecular Biology, 2004-10-22)
Eukaryotic cells undergo arrest and enter apoptosis in response to short telomeres. T cells from late generation mTR(-/-) mice that lack telomerase show increased apoptosis when stimulated to enter the cell cycle. The ...
The Shortest Telomere, Not Average Telomere Length, Is Critical for Cell Viability and Chromosome Stability
(Cell Press, 2001-10-05)
Loss of telomere function can induce cell cycle arrest and apoptosis. To investigate the processes that trig- ger cellular responses to telomere dysfunction, we crossed mTR/ G6 mice that have short telomeres with mice ...
Telomeres Do D-Loop–T-Loop
(Cell Press, 1999-05-14)
The RNA component of human telomerase
(American Association for the Advancement of Science, 1995-09-01)
Eukaryotic chromosomes are capped with repetitive telomere sequences that protect the ends from damage and rearrangements. Telomere repeats are synthesized by telomerase, a ribonucleic acid (RNA)-protein complex. Here, the ...
Telomere dysfunction triggers developmentally regulated germ cell apoptosis
(American Society for Cell Biology, 2001-07)
Telomere dysfunction results in fertility defects in a number of organisms. Although data from fission yeast and Caenorhabditis elegans suggests that telomere dysfunction manifests itself primarily as defects in proper ...