Search results
Results from the WOW.Com Content Network
Telomeres at the end of a chromosome. The relationship between telomeres and longevity and changing the length of telomeres is one of the new fields of research on increasing human lifespan and even human immortality. [1] [2] Telomeres are sequences at the ends of chromosomes that shorten with each cell division and determine the lifespan of ...
In general, TERRA has been shown to be most abundant in cells with long telomeres, [2] [3] while cells with short telomeres express comparatively lower levels of transcript expression. There is also evidence that overexpression of TERRA in human cells can help promote telomere processing by inhibiting the 5'-3' exonuclease Exo1 through the Ku70 ...
Critically short telomeres trigger a DNA damage response and cellular senescence. [32] Mice have much longer telomeres, but a greatly accelerated telomere shortening-rate and greatly reduced lifespan compared to humans and elephants. [33] Telomere shortening is associated with aging, mortality, and aging-related diseases in experimental animals.
(A) Telomere-bound proteins involved in preventing the activation of the DNA damage response checkpoint and of DSB repair mechanisms in S. cerevisiae (top) and in humans (bottom). (B) Overview of the normal function of telomere-shelterin complexes and the pathways activated by telomere shortening. [5]
14375 Ensembl ENSG00000196419 ENSMUSG00000022471 UniProt P12956 P23475 RefSeq (mRNA) NM_001469 NM_001288976 NM_001288977 NM_001288978 NM_010247 RefSeq (protein) NP_001275905 NP_001275906 NP_001275907 NP_001460 NP_001275905.1 NP_001460.1 NP_034377 Location (UCSC) Chr 22: 41.62 – 41.66 Mb Chr 15: 81.87 – 81.92 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Ku70 is a protein that ...
However, other studies have shown that under certain conditions TERRA can recruit telomerase to telomeres. [2] TERRAs are essential for telomere length and maintenance. [3] [2] At least four factors contribute to telomere maintenance: telomerase, shelterin, TERRA and the CST Complex. [4]
Repeated sequences (also known as repetitive elements, repeating units or repeats) are short or long patterns that occur in multiple copies throughout the genome.In many organisms, a significant fraction of the genomic DNA is repetitive, with over two-thirds of the sequence consisting of repetitive elements in humans. [1]
Telomere: Used to maintain chromosomal integrity by capping off the ends of the linear chromosomes. This region is a microsatellite , but its function is more specific than a simple tandem repeat. Throughout the eukaryotic kingdom, the overall structure of chromosome ends is conserved and is characterized by the telomeric tract - a series of ...