Telomerase Reconstitution
Telomerase Reconstitution - Related Videos
09:25
In vitro Reconstitution of the Active T. castaneum Telomerase
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Cited by 5 •
2011
Efforts to isolate the catalytic subunit of telomerase, TERT, in sufficient quantities for structural studies, have been met with limited success for more than a decade. Here, we present methods for the isolation of the recombinant Tribolium castaneum TERT (TcTERT) and the reconstitution of the active T. castaneum telomerase ribonucleoprotein (RNP) complex in vitro.
02:41
Telomeres and Telomerase
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2020
In eukaryotic DNA replication, a single-stranded DNA fragment remains at the end of a chromosome after the removal of the final primer. This section of DNA cannot be replicated in the same manner as the rest of the strand because there is no 3’ end to which the newly synthesized DNA can attach. This non-replicated fragment results in gradual loss of the chromosomal DNA during each cell duplication. Additionally, it can induce a DNA damage response by enzymes that recognize single-stranded DNA.
02:41
Telomeres and Telomerase
0 Views •
2023
In eukaryotic DNA replication, a single-stranded DNA fragment remains at the end of a chromosome after the removal of the final primer. This section of DNA cannot be replicated in the same manner as the rest of the strand because there is no 3’ end to which the newly synthesized DNA can attach. This non-replicated fragment results in gradual loss of the chromosomal DNA during each cell duplication. Additionally, it can induce a DNA damage response by enzymes that recognize single-stranded DNA.
12:08
Telomere Length and Telomerase Activity; A Yin and Yang of Cell Senescence
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Cited by 29 •
2013
An accurate, short, sophisticated and cheap method is described that assesses telomere length in multiple tissues and species using qRT-PCR. In addition, we will describe a simple assay to assess telomerase activity as a complementary backbone test for telomere length.
07:05
Reconstitution of Membrane Proteins
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2023
Reconstitution is the process of returning an isolated biomolecule to its original form or function. This is particularly useful for studying membrane proteins, which enable important cellular functions and affect the behavior of nearby lipids. To study the function of purified membrane proteins in situ, they must be reconstituted by integrating them into an artificial lipid membrane. This video introduces membrane protein reconstitution concepts and related procedures, such as protein...
FAQs
TERT supplies the reverse transcriptase activity, whereas TERC provides the RNA template that determines the repeated DNA sequence added to chromosome ends. Their complementary roles make it possible to examine whether telomerase function depends on correct component pairing, rather than treating the enzyme as a single undifferentiated activity. This distinction helps separate assembly requirements from catalytic function.
TERC guides the sequence synthesis performed by TERT, allowing telomerase to add repeated DNA sequences at chromosome ends. This activity helps counteract telomere shortening that accompanies genome replication. Reconstitution therefore provides a controlled way to study how template-guided DNA addition supports telomere maintenance and how failures in that process could affect chromosome stability.
A reconstituted system can separate three questions that are difficult to distinguish in an intact cell: whether TERT and TERC assemble correctly, whether the assembled complex performs catalysis, and which regulatory requirements influence that activity. By examining these features under controlled conditions, researchers can identify molecular steps that connect telomerase formation with effective telomere maintenance.
The core workflow begins by bringing together the essential TERT protein and TERC RNA template, then examining whether the resulting complex exhibits telomerase activity. Researchers can vary the reconstruction conditions to distinguish requirements for assembly, catalysis, or regulation. This staged approach keeps the molecular system defined and makes each component’s contribution easier to interpret.
Telomerase Reconstitution is useful when researchers need to study telomerase independently of the many processes operating inside a cell. It supports focused investigations of telomere maintenance, genome stability, cellular aging, and stem cell function. The controlled format also provides a foundation for examining how altered telomerase activity may relate to telomere-related disorders or cancer.
These systems allow investigators to examine the molecular activity responsible for extending chromosome ends before interpreting its consequences in disease contexts. By clarifying the requirements for telomerase assembly and catalysis, reconstitution studies can inform research on telomerase-targeted therapies and on disorders associated with abnormal telomere maintenance. They also connect molecular observations with broader genome-stability outcomes.