
Telomerase - Wikipedia
Telomerase, also called terminal transferase, [1] is a ribonucleoprotein that adds a species-dependent telomere repeat sequence to the 3' end of telomeres. A telomere is a region of …
Telomerase | Description, Function, & Facts | Britannica
Nov 21, 2025 · Telomerase is an enzyme that influences cell life span by adding organic compounds known as nucleotides to telomeres, segments of DNA located at the ends of …
Biochemistry, Telomere And Telomerase - StatPearls - NCBI …
Dec 11, 2022 · Telomerase is a ribonucleoprotein structure comprising a functional RNA component and a catalytic reverse transcriptase component. The RNA component houses a …
Telomeres and Telomerase: Structure and Functions - Microbe …
Mar 30, 2025 · In eukaryotes, telomerase, a telomeric enzyme includes a catalytic protein subunit known as telomerase reverse transcriptase (hTERT) and a core RNA component (hTR) that …
Telomeres and telomerase (article) | Khan Academy
Some cells have the ability to reverse telomere shortening by expressing telomerase, an enzyme that extends the telomeres of chromosomes. Telomerase is an RNA-dependent DNA …
Telomerase – Structure, Mechanism, Regulation, Functions
Dec 19, 2024 · Telomerase is a ribonucleoprotein enzyme that maintains the protective telomere sequences at the ends of eukaryotic chromosomes by adding repetitive nucleotide sequences, …
Definition of telomerase - NCI Dictionary of Cancer Terms
Each time a cell divides, the telomeres lose a small amount of DNA and become shorter. Over time, the chromosomes become damaged and the cells die. Telomerase helps keep this from …
Telomerase - an overview | ScienceDirect Topics
Telomerase is a reverse transcriptase that adds repeats of a DNA sequence (TTAGGG) to the ends of chromosomes (telomeres) in mitotic cells, thus maintaining their length and preventing …
Recent progress in human telomerase structure and its …
Most cancer and stem cells activate telomerase to preserve critical genetic material during cell division. Telomerase is a reverse transcriptase ribonucleoprotein that adds telomeric repeats …
What Is Telomerase Activity and Why Is It Important?
Jul 29, 2025 · Telomerase is the enzyme that counteracts this shortening by adding new telomeric DNA sequences, thereby maintaining or extending telomere length. Telomerase is classified …