Search results
Results From The WOW.Com Content Network
Telomere-binding proteins function to generate a T-loop, which is a specialized loop structure to cap the telomeric ends. Telomerase activity is regulated by protection of telomeres 1 (POT1). [9] They serve as a protective safeguard against premature degradation as the telomere ends are no longer hidden from damage detection.
The CST complex is a cellular multiprotein complex involved in telomere maintenance. In budding yeast (Saccharomyces cerevisiae), it is composed of the proteins Cdc13, Stn1, and Ten1; in mammals, it consists of the proteins CTC1, STN1, and TEN1. [1] It is related to the replication protein A complex.
The shelterin protein TPP1 is both necessary and sufficient to recruit the telomerase enzyme to telomeres, and is the only shelterin protein in direct contact with telomerase. [24] By using TERC, TERT can add a six-nucleotide repeating sequence, 5'-TTAGGG (in vertebrates; the sequence differs in other organisms) to the 3' strand of chromosomes ...
At the very 3'-end of the telomere there is a 300 base pair overhang which can invade the double-stranded portion of the telomere forming a structure known as a T-loop. This loop is analogous to a knot, which stabilizes the telomere, and prevents the telomere ends from being recognized as breakpoints by the DNA repair machinery.
Shelterin (also called telosome) is a protein complex known to protect telomeres in many eukaryotes from DNA repair mechanisms, as well as to regulate telomerase activity. In mammals and other vertebrates, telomeric DNA consists of repeating double-stranded 5'-TTAGGG-3' (G-strand) sequences (2-15 kilobases in humans) along with the 3'-AATCCC-5' (C-strand) complement, ending with a 50-400 ...
n/a Ensembl ENSG00000277925 n/a UniProt n a n/a RefSeq (mRNA) n/a n/a RefSeq (protein) n/a n/a Location (UCSC) Chr 3: 169.76 – 169.77 Mb n/a PubMed search n/a Wikidata View/Edit Human RNA family Vertebrate telomerase RNA Identifiers Symbol Telomerase-vert Rfam RF00024 Other data RNA type Gene Domain(s) Eukaryote ; Virus PDB structures PDBe RNA family Ciliate telomerase RNA Identifiers Symbol ...
Sgo2 remains in subtelomeres, whose cells lack telomere DNA. Sgo2 represses the expression of subtelomeric genes that is in a different pass-way from the H3K9me3- Swi6-mediated heterochromatin. Sgo2 has also repressive effects for timing of subtelomeres replication by suppressing Sld3, [25] a replication factor, at the start of the replication ...
TERF 1 gene encodes a telomere specific protein which is a component of the telomere's shelterin nucleoprotein complex. This protein is present at telomeres throughout the cell cycle and functions as an inhibitor of telomerase, acting in cis to limit the elongation of individual chromosome ends. It is known to protect telomeres in mammals from ...