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  1. 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 …

  2. 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 …

  3. 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 …

  4. 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 …

  5. 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 …

  6. 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, …

  7. 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 …

  8. 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 …

  9. 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 …

  10. 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 …