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- Table of Contents
Facts about Telomerase reverse transcriptase.
Catalytic component of the teleromerase holoenzyme complex whose primary activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. Catalyzes the RNA- dependent extension of 3'-chromosomal termini using the 6- nucleotide telomeric repeat unit, 5'-TTAGGG-3'.
Human | |
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Gene Name: | TERT |
Uniprot: | O14746 |
Entrez: | 7015 |
Belongs to: |
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reverse transcriptase family |
EST2Telomerase-associated protein 2; hEST2; hTERT; TCS1EC 2.7.7.49; Telomerase catalytic subunit; telomerase reverse transcriptase; TERT; TP2HEST2; TRTEC 2.7.7
Mass (kDA):
126.997 kDA
Human | |
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Location: | 5p15.33 |
Sequence: | 5; NC_000005.10 (1253148..1295068, complement) |
Expressed at a high level in thymocyte subpopulations, at an intermediate level in tonsil T-lymphocytes, and at a low to undetectable level in peripheral blood T- lymphocytes.
Nucleus, nucleolus. Nucleus, nucleoplasm. Nucleus. Chromosome, telomere. Cytoplasm. Nucleus, PML body. Shuttling between nuclear and cytoplasm depends on cell cycle, phosphorylation states, transformation and DNA damage. Diffuse localization in the nucleoplasm. Enriched in nucleoli of certain cell types. Translocated to the cytoplasm via nuclear pores in a CRM1/RAN-dependent manner involving oxidative stress-mediated phosphorylation at Tyr-707. Dephosphorylation at this site by SHP2 retains TERT in the nucleus. Translocated to the nucleus by phosphorylation by AKT.
PMID: 9288757 by Meyerson M., et al. hEST2, the putative human telomerase catalytic subunit gene, is up- regulated in tumor cells and during immortalization.
PMID: 9252327 by Nakamura T.M., et al. Telomerase catalytic subunit homologs from fission yeast and human.
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