O14746 (TERT_HUMAN) Reviewed, UniProtKB/Swiss-Prot
Last modified
January 25, 2012.
Version 111.
History...
Names·Attributes·General annotation·Ontologies·Interactions·Alt products·Sequence annotation·Sequences·References·Web links·Cross-refs·Entry info·DocumentsCustomize order
Names·Attributes·General annotation·Ontologies·Interactions·Alt products·Sequence annotation·Sequences·References·Web links·Cross-refs·Entry info·DocumentsCustomize orderNames and origin
| Protein names | Recommended name: Telomerase reverse transcriptase EC=2.7.7.49 Alternative name(s): HEST2 Telomerase catalytic subunit Telomerase-associated protein 2 Short name=TP2 | ||||
| Gene names |
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| Organism | Homo sapiens (Human) | ||||
| Taxonomic identifier | 9606 [NCBI] | ||||
| Taxonomic lineage | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Catarrhini › Hominidae › Homo |
Protein attributes
| Sequence length | 1132 AA. |
| Sequence status | Complete. |
| Protein existence | Evidence at protein level |
General annotation (Comments)
| Function | Telomerase is a ribonucleoprotein enzyme essential for the replication of chromosome termini in most eukaryotes. Active in progenitor and cancer cells. Inactive, or very low activity, in normal somatic cells. Catalytic component of the teleromerase holoenzyme complex whose main 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 with the 6-nucleotide telomeric repeat unit, 5'-TTAGGG-3'. The catalytic cycle involves primer binding, primer extension and release of product once the template boundary has been reached or nascent product translocation followed by further extension. More active on substrates containing 2 or 3 telomeric repeats. Telomerase activity is regulated by a number of factors including telomerase complex-associated proteins, chaperones and polypeptide modifiers. Modulates Wnt signaling. Plays important roles in aging and antiapoptosis. Ref.9 Ref.15 Ref.18 Ref.20 Ref.22 Ref.24 Ref.26 Ref.27 Ref.29 Ref.30 Ref.31 Ref.32 |
| Catalytic activity | Deoxynucleoside triphosphate + DNA(n) = diphosphate + DNA(n+1). |
| Subunit structure | Homodimer; dimerization is required to produce a functional complex. Oligomer; can form oligomers in the absence of the telomerase RNA template component (TERC). Catalytic subunit of the telomerase holoenzyme complex composed minimally of TERT and TERC. The telomerase complex is composed of TERT, DKC1, WDR79/TCAB1, NOP10, NHP2, GAR1, TEP1, EST1A, POT1 and a telomerase RNA template component (TERC). The molecular chaperone HSP90/P23 complex is required for correct assembly and stabilization of the active telomerase. Interacts directly with HSP90A and PTGES3. Interacts with HSPA1A; the interaction occurs in the absence of TERC and dissociates once the complex has formed. Interacts with RAN; the interaction promotes nuclear export of TERT. Interacts with XPO1. Interacts with PTPN11; the interaction retains TERT in the nucleus. Interacts with NCL (via RRM1 and C-terminal RRM4/Arg/Gly-rich domains); the interaction is important for nucleolar localization of TERT. Interacts with SMARCA4 (via the bromodomain); the interaction regulates Wnt-mediated signaling. Interacts with MCRS1 (isoform MCRS2); the interaction inhibits in vitro telomerase activity. Interacts with PIF1; the interaction has no effect on the elongation activity of TERT. Interacts with PML; the interaction recruits TERT to PML bodies and inhibits telomerase activity. Ref.12 Ref.13 Ref.14 Ref.17 Ref.19 Ref.25 Ref.28 Ref.30 Ref.31 |
| Subcellular location | Nucleus › nucleolus. Nucleus › nucleoplasm. Nucleus. Chromosome › telomere. Cytoplasm. Nucleus › PML body. Note: 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. Ref.13 Ref.15 Ref.16 Ref.17 Ref.28 Ref.29 Ref.30 |
| Tissue specificity | 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. Ref.8 Ref.9 |
| Induction | Activated by cytotoxic events and down-regulated during aging. In peripheral T lymphocytes, induced By CD3 and by PMA/ionomycin. Inhibited by herbimycin B. Ref.8 |
| Domain | The primer grip sequence in the RT domain is required for telomerase activity and for stable association with short telomeric primers. Ref.18 The RNA-interacting domain 1 (RD1)/N-terminal extension (NTE) is required for interaction with the pseudoknot-template domain of each of TERC dimers. It contains anchor sites that bind primer nucleotides upstream of the RNA-DNA hybrid and is thus an essential determinant of repeat addition processivity. Ref.18 The RNA-interacting domain 2 (RD2) is essential for both interaction with the CR4-CR5 domain of TERC and for DNA sythesis. Ref.18 |
| Post-translational modification | Ubiquitinated, leading to proteasomal degradation. Ref.19 Phosphorylation at Tyr-707 under oxidative stress leads to translocation of TERT to the cytoplasm and reduces its antiapoptotic activity. Dephosphorylated by SHP2/PTPN11 leading to nuclear retention. Phosphorylation by the AKT pathway promotes nuclear location. Ref.13 Ref.21 Ref.23 Ref.24 Ref.28 Ref.29 |
| Involvement in disease | Note=Activation of telomerase has been implicated in cell immortalization and cancer cell pathogenesis. Defects in TERT are associated with susceptibilty to aplastic anemia (AA) [MIM:609135]. AA is a rare disease in which the reduction of the circulating blood cells results from damage to the stem cell pool in bone marrow. In most patients, the stem cell lesion is caused by an autoimmune attack. T-lymphocytes, activated by an endogenous or exogenous, and most often unknown antigenic stimulus, secrete cytokines, including IFN-gamma, which would in turn be able to suppress hematopoiesis. Ref.35 Ref.36 Ref.40 Ref.41 Ref.45 Note=Genetic variations in TERT are associated with coronary artery disease (CAD). Ref.38 Defects in TERT are the cause of dyskeratosis congenita autosomal dominant type 2 (DKCA2) [MIM:613989]. A rare multisystem disorder caused by defective telomere maintenance. It is characterized by progressive bone marrow failure, and the clinical triad of reticulated skin hyperpigmentation, nail dystrophy, and mucosal leukoplakia. Common but variable features include premature graying, aplastic anemia, low platelets, osteoporosis, pulmonary fibrosis, and liver fibrosis among others. Early mortality is often associated with bone marrow failure, infections, fatal pulmonary complications, or malignancy. Ref.35 Ref.37 Defects in TERT are the cause of dyskeratosis congenita autosomal recessive type 4 (DKCB4) [MIM:613989]. A rare multisystem disorder caused by defective telomere maintenance. It is characterized by progressive bone marrow failure, and the clinical triad of reticulated skin hyperpigmentation, nail dystrophy, and mucosal leukoplakia. Common but variable features include premature graying, aplastic anemia, low platelets, osteoporosis, pulmonary fibrosis, and liver fibrosis among others. Early mortality is often associated with bone marrow failure, infections, fatal pulmonary complications, or malignancy. Defects in TERT are a cause of susceptibility to pulmonary fibrosis idiopathic (IPF) [MIM:178500]. Pulmonary fibrosis is a lung disease characterized by shortness of breath, radiographically evident diffuse pulmonary infiltrates, and varying degrees of inflammation and fibrosis on biopsy. It results in acute lung injury with subsequent scarring and endstage lung disease. |
| Sequence similarities | Belongs to the reverse transcriptase family. Telomerase subfamily. Contains 1 reverse transcriptase domain. |
Ontologies
Binary interactions
With | Entry | #Exp. | IntAct | Notes |
|---|---|---|---|---|
| RUVBL1 | Q9Y265 | 11 | EBI-1772203,EBI-353675 |
Alternative products
| This entry describes 3 isoforms produced by alternative splicing. [Align] [Select] | ||||||
| Isoform 1 (identifier: O14746-1) This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry. | ||||||
| Isoform 2 (identifier: O14746-2) The sequence of this isoform differs from the canonical sequence as follows: 764-807: STLTDLQPYM...LNEASSGLFD → LRPVPGDPAG...AGRAAPAFGG 808-1132: Missing. | ||||||
| Note: Phosphorylated on Ser-797. | ||||||
| Isoform 3 (identifier: O14746-3) The sequence of this isoform differs from the canonical sequence as follows: 885-947: Missing. | ||||||
| Note: May be produced at very low levels due to a premature stop codon in the mRNA, leading to nonsense-mediated mRNA decay. No experimental confirmation available. |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||
Molecule processing | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chain | 1 – 1132 | 1132 | Telomerase reverse transcriptase | PRO_0000054925 | |||||
Regions | |||||||||
| Domain | 605 – 935 | 331 | Reverse transcriptase | ||||||
| Region | 1 – 230 | 230 | RNA-interacting domain 1 | ||||||
| Region | 58 – 197 | 140 | GQ motif | ||||||
| Region | 137 – 141 | 5 | Required for regulating specificity for telomeric DNA and for processivity for primer elongation | ||||||
| Region | 231 – 324 | 94 | Linker | ||||||
| Region | 301 – 538 | 238 | Required for oligomerization | ||||||
| Region | 325 – 550 | 226 | RNA-interacting domain 2 | ||||||
| Region | 376 – 521 | 146 | QFP motif | ||||||
| Region | 397 – 417 | 21 | CP motif | ||||||
| Region | 914 – 928 | 15 | Required for oligomerization | ||||||
| Region | 930 – 934 | 5 | Primer grip sequence | ||||||
| Region | 936 – 1132 | 197 | CTE | ||||||
Sites | |||||||||
| Metal binding | 712 | 1 | Magnesium; catalytic By similarity | ||||||
| Metal binding | 868 | 1 | Magnesium; catalytic By similarity | ||||||
| Metal binding | 869 | 1 | Magnesium; catalytic By similarity | ||||||
| Site | 169 | 1 | Required for optimal binding of telomeric ssDNA and incorporation of nucleotides at the second position of the template | ||||||
| Site | 867 | 1 | Required for nucleotide incorporation and primer extension rate | ||||||
Amino acid modifications | |||||||||
| Modified residue | 707 | 1 | Phosphotyrosine; by SRC-type Tyr-kinases Ref.13 Ref.28 | ||||||
| Modified residue | 1113 | 1 | Phosphothreonine Ref.21 | ||||||
| Modified residue | 1125 | 1 | Phosphoserine Ref.21 | ||||||
Natural variations | |||||||||
| Alternative sequence | 764 – 807 | 44 | STLTD…SGLFD → LRPVPGDPAGLHPLHAALQP VLRRHGEQAVCGDSAGRAAP AFGG in isoform 2. | VSP_019587 | |||||
| Alternative sequence | 808 – 1132 | 325 | Missing in isoform 2. | VSP_019588 | |||||
| Alternative sequence | 885 – 947 | 63 | Missing in isoform 3. | VSP_021727 | |||||
| Natural variant | 55 | 1 | L → Q in idiopathic pulmonary fibrosis susceptibility; impaired telomerase acivity. Ref.43 | VAR_062535 | |||||
| Natural variant | 65 | 1 | P → A Associated with acute myeloid leukemia. Ref.45 Ref.46 | VAR_062780 | |||||
| Natural variant | 202 | 1 | A → T in AA; severe and moderate; shorter telomeres. Ref.35 Ref.36 Ref.45 | VAR_036863 | |||||
| Natural variant | 279 | 1 | A → T. Ref.36 | VAR_036864 | |||||
| Natural variant | 299 | 1 | V → M Associated with acute myeloid leukemia. Ref.45 Ref.46 | VAR_062781 | |||||
| Natural variant | 412 | 1 | H → Y in AA susceptibility; severe and moderate; associated with susceptibility to acute myelogenous leukemia. Ref.7 Ref.36 Ref.45 Ref.46 Corresponds to variant rs34094720 [ dbSNP | Ensembl ]. | VAR_025149 | |||||
| Natural variant | 441 | 1 | Missing in AA susceptibility; associated with susceptibility to acute myeloid leukemia. | VAR_036865 | |||||
| Natural variant | 522 | 1 | R → K Associated with acute myeloid leukemia. Ref.45 Ref.46 | VAR_062782 | |||||
| Natural variant | 570 | 1 | K → N in AA susceptibility; abolishes telomerase catalytic activity but no effect on binding to TERC. Ref.41 Ref.45 | VAR_062536 | |||||
| Natural variant | 631 | 1 | R → Q in AA susceptibility. Ref.45 | VAR_062783 | |||||
| Natural variant | 682 | 1 | G → D in AA susceptibility; non-severe; abolishes telomerase catalytic activity but little effect on binding to TERC. Ref.40 Ref.41 | VAR_062537 | |||||
| Natural variant | 694 | 1 | V → M in AA susceptibility; moderate. Ref.36 Ref.45 | VAR_036866 | |||||
| Natural variant | 721 | 1 | P → R in DKCB4; no effect on telomerase catalytic activity and little effect on binding to TERC. Ref.39 Ref.41 | VAR_062538 | |||||
| Natural variant | 726 | 1 | T → M in AA susceptibility; very severe; no effect on telomerase catalytic activity but shortened telomeres. Ref.40 Ref.41 | VAR_062539 | |||||
| Natural variant | 772 | 1 | Y → C in AA susceptibility; moderate. Ref.36 | VAR_036867 | |||||
| Natural variant | 785 | 1 | P → L in AA susceptibility. Ref.45 | VAR_062784 | |||||
| Natural variant | 811 | 1 | R → C in DKCB4; 50% reduction in telomerase activity. Ref.42 | VAR_062540 | |||||
| Natural variant | 865 | 1 | R → H in idiopathic pulmonary fibrosis susceptibility. Ref.44 | VAR_036868 | |||||
| Natural variant | 901 | 1 | R → W in DKCB4; severe phenotype overlapping with Hoyeraal-Hreidarsson syndrome; very short telomeres and greatly reduced telomerase activity. Ref.42 | VAR_062541 | |||||
| Natural variant | 902 | 1 | K → N in DKCA2; abolishes telomerase catalytic activity but no effect on binding to TERC. Ref.37 Ref.41 | VAR_036869 | |||||
| Natural variant | 948 | 1 | S → R. Corresponds to variant rs34062885 [ dbSNP | Ensembl ]. | VAR_053726 | |||||
| Natural variant | 979 | 1 | R → W in DKCA2; shortened telomeres but no effect on telomerase catalytic activity nor on binding to TERC. Ref.35 Ref.41 | VAR_062542 | |||||
| Natural variant | 1062 | 1 | A → T Increased incidence in sporadic acute myeloid leukemia. Ref.7 Ref.36 Ref.45 Ref.46 Corresponds to variant rs35719940 [ dbSNP | Ensembl ]. | VAR_025150 | |||||
| Natural variant | 1090 | 1 | V → M in AA susceptibility; severe. Ref.36 | VAR_036870 | |||||
| Natural variant | 1110 | 1 | T → M in idiopathic pulmonary fibrosis susceptibility; impaired telomerase acivity. Ref.43 | VAR_062543 | |||||
| Natural variant | 1127 | 1 | F → L in DKCA2; severe; shortened telomeres but no effect on telomerase catalytic activity nor on binding to TERC. Ref.35 Ref.41 | VAR_062544 | |||||
Experimental info | |||||||||
| Mutagenesis | 137 – 141 | 5 | WGLLL → AAAAA: Reduced catalytic activity and repeat addition processivity. Complete loss of catalytic activity but no loss of binding to telomeric primers; when associated with 930-A--A-934. Ref.26 | ||||||
| Mutagenesis | 169 | 1 | Q → A: About 80% loss of enzymatic activity. Greatly reduced incorporation of second nucleotide. Altered strength of binding to ssDNA. Little effect on repeat addition processivity, nor on TR interaction nor on protein levels. Ref.32 | ||||||
| Mutagenesis | 169 | 1 | Q → N: About 85% loss of enzymatic activity. Greatly reduced incorporation of second nucleotide. Altered strength of binding to ssDNA. No effect on protein levels nor on TR interaction. Ref.32 | ||||||
| Mutagenesis | 169 | 1 | Q → T: About 90% loss of enzymatic activity. Greatly reduced incorporation of second nucleotide. Altered strength of binding to ssDNA. No effect on protein levels nor on TR interaction. Ref.32 | ||||||
| Mutagenesis | 547 | 1 | W → A: Defective in high-affinity TERC interactions. Ref.18 | ||||||
| Mutagenesis | 631 | 1 | R → A: Abolishes telomerase catalytic activity. Ref.22 | ||||||
| Mutagenesis | 707 | 1 | Y → F: Abolishes oxidative stress-induced phosphorylation and RAN binding. Impaired nuclear export and enhanced antiapoptotic activity against ROS-dependent apoptosis induction. Impaired interaction with PTPN11. No dephosphorylation by PTPN11. Ref.13 Ref.28 | ||||||
| Mutagenesis | 712 | 1 | D → A: Loss of telomerase activity. In the absence of TR, no loss of binding to telomeric primers. Ref.9 Ref.10 Ref.22 Ref.26 | ||||||
| Mutagenesis | 866 | 1 | L → Y: Moderate reduction in telomerase activity, no change in repeat extension rate nor on nucleotide incorporation fidelity. Little further reduction in activity but 13.5-fold increase in nucleotide incorporation fidelity; when associated with M-867. Ref.27 | ||||||
| Mutagenesis | 867 | 1 | V → A: About 75% reduction in telomerase activity, about 80% reduction in repeat reduction rate and 3.9-fold increase in nucleotide incorporation fidelity. Ref.27 | ||||||
| Mutagenesis | 867 | 1 | V → M: About 75% reduction in telomerase activity, about 50% reduction in repeat extension rate and 5.2-fold increase in nucleotide incorporation fidelity. Little further reduction in activity and 13.5-fold increase in nucleotide incorporation fidelity; when associated with Y-866. Ref.27 | ||||||
| Mutagenesis | 867 | 1 | V → T: Severe reduction in telomerase activity, about 50% reduction in repeat extension rate and 2.2-fold increase in nucleotide incorporation fidelity. No further reduction in activity but 2.8-fold increase in nucleotide incorporation fidelity; when associated with Y-866. Ref.27 | ||||||
| Mutagenesis | 868 – 869 | 2 | DD → AA: Loss of telomerase activity. Ref.9 Ref.10 Ref.18 Ref.20 Ref.22 | ||||||
| Mutagenesis | 868 | 1 | D → A: Loss of telomerase activity. Ref.9 Ref.10 Ref.18 Ref.20 Ref.22 | ||||||
| Mutagenesis | 869 | 1 | D → A: Loss of telomerase activity. Ref.9 Ref.10 | ||||||
| Mutagenesis | 930 – 934 | 5 | WCGLL → AAAAA: Completely abolishes telomerase-mediated primer extension and reduced binding to short telomeric primers. Complete loss of catalytic activity but no further loss of binding to telomeric primers; when associated with 137-A--A-141. Ref.26 | ||||||
| Sequence conflict | 516 | 1 | D → G in AAC51724. Ref.1 | ||||||
Sequences
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References
| « Hide 'large scale' references | |
| [1] | "hEST2, the putative human telomerase catalytic subunit gene, is up-regulated in tumor cells and during immortalization." Meyerson M., Counter C.M., Eaton E.N., Ellisen L.W., Steiner P., Caddle S.D., Ziaugra L., Beijersbergen R.L., Davidoff M.J., Liu Q., Bacchetti S., Haber D.A., Weinberg R.A. Cell 90:785-795(1997) [PubMed: 9288757] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1). |
| [2] | "Telomerase catalytic subunit homologs from fission yeast and human." Nakamura T.M., Morin G.B., Chapman K.B., Weinrich S.L., Andrews W.H., Lingner J., Harley C.B., Cech T.R. Science 277:955-959(1997) [PubMed: 9252327] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1). Tissue: Embryonic kidney. |
| [3] | "Genomic organization and promoter characterization of the gene encoding the human telomerase reverse transcriptase (hTERT)." Wick M., Zubov D., Hagen G. Gene 232:97-106(1999) [PubMed: 10333526] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA]. |
| [4] | "Expression profile of a gamma-deletion variant of the human telomerase reverse transcriptase gene." Hisatomi H., Ohyashiki K., Ohyashiki J.H., Nagao K., Kanamaru T., Hirata H., Hibi N., Tsukada Y. Neoplasia 5:193-197(2003) [PubMed: 12869302] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 2). |
| [5] | "Differential alternative splicing expressions of telomerase reverse transcriptase in gastrointestinal cell lines." Nagao K., Katsumata K., Aizawa Y., Saito N., Hirata H., Sasaki H., Yamamoto S., Hikiji K., Koiwa T., Hisatomi H. Oncol. Rep. 11:127-131(2004) [PubMed: 14654914] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 3). Tissue: Stomach cancer. |
| [6] | "Sequence of a BAC carrying the entire hTERT gene." Londono-Vallejo J.A. Submitted (OCT-2001) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA]. |
| [7] | NIEHS SNPs program Submitted (OCT-2005) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA], VARIANTS TYR-412 AND THR-1062. |
| [8] | "Regulated expression of telomerase activity in human T lymphocyte development and activation." Weng N.P., Levine B.L., June C.H., Hodes R.J. J. Exp. Med. 183:2471-2479(1996) [PubMed: 8676067] [Abstract] Cited for: TISSUE SPECIFICITY, INDUCTION. |
| [9] | "Human telomerase contains evolutionarily conserved catalytic and structural subunits." Harrington L., Zhou W., McPhail T., Oulton R., Yeung D.S., Mar V., Bass M.B., Robinson M.O. Genes Dev. 11:3109-3115(1997) [PubMed: 9389643] [Abstract] Cited for: FUNCTION IN TELOMERASE ACTIVITY, TISSUE SPECIFICITY, ASSOCIATION WITH TEP1, MUTAGENESIS OF ASP-712; ASP-868 AND ASP-869. |
| [10] | "Reconstitution of human telomerase activity in vitro." Beattie T.L., Zhou W., Robinson M.O., Harrington L. Curr. Biol. 8:177-180(1998) [PubMed: 9443919] [Abstract] Cited for: RECONSTITUTION OF THE TELOMERASE COMPLEX, MUTAGENESIS OF ASP-712; ASP-868 AND ASP-869. |
| [11] | "Polymerization defects within human telomerase are distinct from telomerase RNA and TEP1 binding." Beattie T.L., Zhou W., Robinson M.O., Harrington L. Mol. Biol. Cell 11:3329-3340(2000) [PubMed: 11029039] [Abstract] Cited for: ASSOCIATION WITH TEP1. |
| [12] | "Stable association of hsp90 and p23, but Not hsp70, with active human telomerase." Forsythe H.L., Jarvis J.L., Turner J.W., Elmore L.W., Holt S.E. J. Biol. Chem. 276:15571-15574(2001) [PubMed: 11274138] [Abstract] Cited for: INTERACTION WITH HSPA1A; HSP90A AND PTGES3. |
| [13] | "Hydrogen peroxide triggers nuclear export of telomerase reverse transcriptase via Src kinase family-dependent phosphorylation of tyrosine 707." Haendeler J., Hoffmann J., Brandes R.P., Zeiher A.M., Dimmeler S. Mol. Cell. Biol. 23:4598-4610(2003) [PubMed: 12808100] [Abstract] Cited for: PHOSPHORYLATION AT TYR-707, SUBCELLULAR LOCATION, INTERACTION WITH RAN AND XP01, MUTAGENESIS OF TYR-707. |
| [14] | "Human MCRS2, a cell-cycle-dependent protein, associates with LPTS/PinX1 and reduces the telomere length." Song H., Li Y., Chen G., Xing Z., Zhao J., Yokoyama K.K., Li T., Zhao M. Biochem. Biophys. Res. Commun. 316:1116-1123(2004) [PubMed: 15044100] [Abstract] Cited for: INTERACTION WITH MCRS1. |
| [15] | "Antioxidants inhibit nuclear export of telomerase reverse transcriptase and delay replicative senescence of endothelial cells." Haendeler J., Hoffmann J., Diehl J.F., Vasa M., Spyridopoulos I., Zeiher A.M., Dimmeler S. Circ. Res. 94:768-775(2004) [PubMed: 14963003] [Abstract] Cited for: SUBCELLULAR LOCATION, FUNCTION. |
| [16] | "Immunohistochemical localization of hTERT protein in human tissues." Yan P., Benhattar J., Seelentag W., Stehle J.C., Bosman F.T. Histochem. Cell Biol. 121:391-397(2004) [PubMed: 15138842] [Abstract] Cited for: SUBCELLULAR LOCATION. |
| [17] | "Nucleolin interacts with telomerase." Khurts S., Masutomi K., Delgermaa L., Arai K., Oishi N., Mizuno H., Hayashi N., Hahn W.C., Murakami S. J. Biol. Chem. 279:51508-51515(2004) [PubMed: 15371412] [Abstract] Cited for: INTERACTION WITH NCL, SUBCELLULAR LOCATION. |
| [18] | "Functional organization of repeat addition processivity and DNA synthesis determinants in the human telomerase multimer." Moriarty T.J., Marie-Egyptienne D.T., Autexier C. Mol. Cell. Biol. 24:3720-3733(2004) [PubMed: 15082768] [Abstract] Cited for: FUNCTIONAL DOMAINS, MUTAGENESIS OF TRP-547 AND ASP-868. |
| [19] | "Ubiquitin ligase MKRN1 modulates telomere length homeostasis through a proteolysis of hTERT." Kim J.H., Park S.-M., Kang M.R., Oh S.-Y., Lee T.H., Muller M.T., Chung I.K. Genes Dev. 19:776-781(2005) [PubMed: 15805468] [Abstract] Cited for: INTERACTION WITH MKRN1, UBIQUITINATION. |
| [20] | "An anchor site-type defect in human telomerase that disrupts telomere length maintenance and cellular immortalization." Moriarty T.J., Ward R.J., Taboski M.A., Autexier C. Mol. Biol. Cell 16:3152-3161(2005) [PubMed: 15857955] [Abstract] Cited for: FUNCTION, MUTAGENESIS OF ASP-868. |
| [21] | "Quantitative phosphoproteome analysis using a dendrimer conjugation chemistry and tandem mass spectrometry." Tao W.A., Wollscheid B., O'Brien R., Eng J.K., Li X.-J., Bodenmiller B., Watts J.D., Hood L., Aebersold R. Nat. Methods 2:591-598(2005) [PubMed: 16094384] [Abstract] Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT THR-1113 AND SER-1125, MASS SPECTROMETRY. Tissue: Leukemic T-cell. |
| [22] | "Telomerase with mutated catalytic motifs has dominant negative effects on telomerase activity and inhibits cell growth." Rahman R., Mo L., Cui W. Biochem. Biophys. Res. Commun. 350:796-802(2006) [PubMed: 17026956] [Abstract] Cited for: FUNCTION, MUTAGENESIS OF ARG-631; ASP-712 AND ASP-868. |
| [23] | "Phosphoproteome analysis of the human mitotic spindle." Nousiainen M., Sillje H.H.W., Sauer G., Nigg E.A., Koerner R. Proc. Natl. Acad. Sci. U.S.A. 103:5391-5396(2006) [PubMed: 16565220] [Abstract] Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-797 (ISOFORM 2), MASS SPECTROMETRY. Tissue: Cervix adenocarcinoma. |
| [24] | "The loss of telomerase activity in highly differentiated CD8+CD28-CD27- T cells is associated with decreased Akt (Ser473) phosphorylation." Plunkett F.J., Franzese O., Finney H.M., Fletcher J.M., Belaramani L.L., Salmon M., Dokal I., Webster D., Lawson A.D., Akbar A.N. J. Immunol. 178:7710-7719(2007) [PubMed: 17548608] [Abstract] Cited for: PHOSPHORYLATION, FUNCTION. |
| [25] | "Purification of human telomerase complexes identifies factors involved in telomerase biogenesis and telomere length regulation." Fu D., Collins K. Mol. Cell 28:773-785(2007) [PubMed: 18082603] [Abstract] Cited for: INTERACTION WITH NAT10. |
| [26] | "Characterization of physical and functional anchor site interactions in human telomerase." Wyatt H.D., Lobb D.A., Beattie T.L. Mol. Cell. Biol. 27:3226-3240(2007) [PubMed: 17296728] [Abstract] Cited for: FUNCTION, DNA-BINDING, MUTAGENESIS OF 137-TRP--LEU-141; ASP-712 AND 930-TRP--LEU-934. |
| [27] | "The active site residue Valine 867 in human telomerase reverse transcriptase influences nucleotide incorporation and fidelity." Drosopoulos W.C., Prasad V.R. Nucleic Acids Res. 35:1155-1168(2007) [PubMed: 17264120] [Abstract] Cited for: FUNCTION, MUTAGENESIS OF LEU-866 AND VAL-867. |
| [28] | "Nuclear protein tyrosine phosphatase Shp-2 is one important negative regulator of nuclear export of telomerase reverse transcriptase." Jakob S., Schroeder P., Lukosz M., Buchner N., Spyridopoulos I., Altschmied J., Haendeler J. J. Biol. Chem. 283:33155-33161(2008) [PubMed: 18829466] [Abstract] Cited for: INTERACTION WITH PTPN11, PHOSPHORYLATION AT TYR-707, SUBCELLULAR LOCATION, MUTAGENESIS OF TYR-707. |
| [29] | "Ionizing radiation up-regulates telomerase activity in cancer cell lines by post-translational mechanism via ras/phosphatidylinositol 3-kinase/Akt pathway." Ram R., Uziel O., Eldan O., Fenig E., Beery E., Lichtenberg S., Nordenberg Y., Lahav M. Clin. Cancer Res. 15:914-923(2009) [PubMed: 19188162] [Abstract] Cited for: PHOSPHORYLATION, FUNCTION, SUBCELLULAR LOCATION. |
| [30] | "PML-IV functions as a negative regulator of telomerase by interacting with TERT." Oh W., Ghim J., Lee E.W., Yang M.R., Kim E.T., Ahn J.H., Song J. J. Cell Sci. 122:2613-2622(2009) [PubMed: 19567472] [Abstract] Cited for: FUNCTION, SUBCELLULAR LOCATION, INTERACTION WITH PML. |
| [31] | "Telomerase modulates Wnt signalling by association with target gene chromatin." Park J.I., Venteicher A.S., Hong J.Y., Choi J., Jun S., Shkreli M., Chang W., Meng Z., Cheung P., Ji H., McLaughlin M., Veenstra T.D., Nusse R., McCrea P.D., Artandi S.E. Nature 460:66-72(2009) [PubMed: 19571879] [Abstract] Cited for: INTERACTION WITH SMARCA4, FUNCTION. |
| [32] | "Human telomerase reverse transcriptase (hTERT) Q169 is essential for telomerase function in vitro and in vivo." Wyatt H.D., Tsang A.R., Lobb D.A., Beattie T.L. PLoS ONE 4:E7176-E7176(2009) [PubMed: 19777057] [Abstract] Cited for: FUNCTION, DNA-BINDING, MUTAGENESIS OF GLN-169. |
| [33] | "A human telomerase holoenzyme protein required for Cajal body localization and telomere synthesis." Venteicher A.S., Abreu E.B., Meng Z., McCann K.E., Terns R.M., Veenstra T.D., Terns M.P., Artandi S.E. Science 323:644-648(2009) [PubMed: 19179534] [Abstract] Cited for: IDENTIFICATION IN THE TELOMERASE HOLOENZYME COMPLEX. |
| [34] | "Crystal structure of HLA-A*2402 complexed with a telomerase peptide." Cole D.K., Rizkallah P.J., Gao F., Watson N.I., Boulter J.M., Bell J.I., Sami M., Gao G.F., Jakobsen B.K. Eur. J. Immunol. 36:170-179(2006) [PubMed: 16323248] [Abstract] Cited for: X-RAY CRYSTALLOGRAPHY (2.8 ANGSTROMS) OF 461-469 IN COMPLEX WITH CLASS I MAJOR HISTOCOMPATIBILITY COMPLEX (MHC). |
| [35] | "Mutations in the reverse transcriptase component of telomerase (TERT) in patients with bone marrow failure." Vulliamy T.J., Walne A., Baskaradas A., Mason P.J., Marrone A., Dokal I. Blood Cells Mol. Dis. 34:257-263(2005) [PubMed: 15885610] [Abstract] Cited for: VARIANT AA THR-202, VARIANTS DKCA2 TRP-979 AND LEU-1127, CHARACTERIZATION OF VARIANT AA THR-202, CHARACTERIZATION OF VARIANTS DKCA2 TRP-979 AND LEU-1127. |
| [36] | "Mutations in TERT, the gene for telomerase reverse transcriptase, in aplastic anemia." Yamaguchi H., Calado R.T., Ly H., Kajigaya S., Baerlocher G.M., Chanock S.J., Lansdorp P.M., Young N.S. N. Engl. J. Med. 352:1413-1424(2005) [PubMed: 15814878] [Abstract] Cited for: VARIANTS AA SUSCEPTIBILITY THR-202; TYR-412; MET-694; CYS-772 AND MET-1090, VARIANTS THR-279; GLU-441 DEL AND THR-1062. |
| [37] | "Haploinsufficiency of telomerase reverse transcriptase leads to anticipation in autosomal dominant dyskeratosis congenita." Armanios M., Chen J.-L., Chang Y.-P.C., Brodsky R.A., Hawkins A., Griffin C.A., Eshleman J.R., Cohen A.R., Chakravarti A., Hamosh A., Greider C.W. Proc. Natl. Acad. Sci. U.S.A. 102:15960-15964(2005) [PubMed: 16247010] [Abstract] Cited for: VARIANT DKCA2 ASN-902, CHARACTERIZATION OF VARIANT DKCA2 ASN-902. |
| [38] | "Coronary artery disease and a functional polymorphism of hTERT." Matsubara Y., Murata M., Watanabe K., Saito I., Miyaki K., Omae K., Ishikawa M., Matsushita K., Iwanaga S., Ogawa S., Ikeda Y. Biochem. Biophys. Res. Commun. 348:669-672(2006) [PubMed: 16890917] [Abstract] Cited for: INVOLVEMENT IN CAD SUSCEPTIBILITY. |
| [39] | "Mutations in dyskeratosis congenita: their impact on telomere length and the diversity of clinical presentation." Vulliamy T.J., Marrone A., Knight S.W., Walne A., Mason P.J., Dokal I. Blood 107:2680-2685(2006) [PubMed: 16332973] [Abstract] Cited for: VARIANT DKCB4 ARG-721. |
| [40] | "Mutations in telomerase catalytic protein in Japanese children with aplastic anemia." Liang J., Yagasaki H., Kamachi Y., Hama A., Matsumoto K., Kato K., Kudo K., Kojima S. Haematologica 91:656-658(2006) [PubMed: 16627250] [Abstract] Cited for: VARIANTS AA SUSCEPTIBILITY ASP-682 AND MET-726, CHARACTERIZATION OF MET-726. |
| [41] | "Functional characterization of natural telomerase mutations found in patients with hematologic disorders." Xin Z.T., Beauchamp A.D., Calado R.T., Bradford J.W., Regal J.A., Shenoy A., Liang Y., Lansdorp P.M., Young N.S., Ly H. Blood 109:524-532(2007) [PubMed: 16990594] [Abstract] Cited for: VARIANT AA SUSCEPTIBILITY ASN-570, CHARACTERIZATION OF VARIANTS ASN-570; ASP-682; ARG-721; MET-726; ASN-902; TRP-979 AND LEU-1127. |
| [42] | "Telomerase reverse-transcriptase homozygous mutations in autosomal recessive dyskeratosis congenita and Hoyeraal-Hreidarsson syndrome." Marrone A., Walne A., Tamary H., Masunari Y., Kirwan M., Beswick R., Vulliamy T., Dokal I. Blood 110:4198-4205(2007) [PubMed: 17785587] [Abstract] Cited for: VARIANTS DKCB4 CYS-811 AND TRP-901, CHARACTERIZATION OF VARIANTS DKCB4 CYS-811 AND TRP-901. |
| [43] | "Telomerase mutations in families with idiopathic pulmonary fibrosis." Armanios M.Y., Chen J.J., Cogan J.D., Alder J.K., Ingersoll R.G., Markin C., Lawson W.E., Xie M., Vulto I., Phillips J.A., Lansdorp P.M., Greider C.W., Loyd J.E. N. Engl. J. Med. 356:1317-1326(2007) [PubMed: 17392301] [Abstract] Cited for: VARIANTS IDIOPATHIC PULMONARY FIBROSIS SUSCEPTIBILITY GLN-55 AND MET-1110, CHARACTERIZATION OF VARIANTS GLN-55 AND MET-1110. |
| [44] | "Adult-onset pulmonary fibrosis caused by mutations in telomerase." Tsakiri K.D., Cronkhite J.T., Kuan P.J., Xing C., Raghu G., Weissler J.C., Rosenblatt R.L., Shay J.W., Garcia C.K. Proc. Natl. Acad. Sci. U.S.A. 104:7552-7557(2007) [PubMed: 17460043] [Abstract] Cited for: VARIANT IDIOPATHIC PULMONARY FIBROSIS SUSCEPTIBILITY HIS-865. |
| [45] | "Defining the pathogenic role of telomerase mutations in myelodysplastic syndrome and acute myeloid leukemia." Kirwan M., Vulliamy T., Marrone A., Walne A.J., Beswick R., Hillmen P., Kelly R., Stewart A., Bowen D., Schonland S.O., Whittle A.M., McVerry A., Gilleece M., Dokal I. Hum. Mutat. 30:1567-1573(2009) [PubMed: 19760749] [Abstract] Cited for: VARIANTS ALA-65; MET-299; LYS-522 AND THR-1062, VARIANTS AA SUSCEPTIBILITY THR-202; TYR-412; GLU-441 DEL; ASN-570; GLN-631; MET-694 AND LEU-785. |
| [46] | "Constitutional hypomorphic telomerase mutations in patients with acute myeloid leukemia." Calado R.T., Regal J.A., Hills M., Yewdell W.T., Dalmazzo L.F., Zago M.A., Lansdorp P.M., Hogge D., Chanock S.J., Estey E.H., Falcao R.P., Young N.S. Proc. Natl. Acad. Sci. U.S.A. 106:1187-1192(2009) [PubMed: 19147845] [Abstract] Cited for: VARIANTS ALA-65; MET-299; TYR-412; GLU-441 DEL; LYS-522 AND THR-1062. |
| + | Additional computationally mapped references. |
Web resources
Cross-references
Sequence databases | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| EMBL GenBank DDBJ | AF018167 mRNA. Translation: AAC51724.1. AF015950 mRNA. Translation: AAC51672.1. AF128894, AF128893 Genomic DNA. Translation: AAD30037.1. AB085628 mRNA. Translation: BAC11010.1. AB086379 mRNA. Translation: BAC11014.1. AY007685 Genomic DNA. Translation: AAG23289.1. DQ264729 Genomic DNA. Translation: ABB72674.1. | ||||||||||||
| IPI | IPI00168908. IPI00298218. IPI00384469. | ||||||||||||
| PIR | T03844. | ||||||||||||
| RefSeq | NP_001180305.1. NM_001193376.1. NP_937983.2. NM_198253.2. | ||||||||||||
| UniGene | Hs.492203. | ||||||||||||
3D structure databases | |||||||||||||
| PDBe RCSB PDB PDBj |
| ||||||||||||
| ProteinModelPortal | O14746. | ||||||||||||
| ModBase | Search... | ||||||||||||
Protein-protein interaction databases | |||||||||||||
| DIP | DIP-40646N. | ||||||||||||
| IntAct | O14746. 3 interactions. | ||||||||||||
| MINT | MINT-133963. | ||||||||||||
| STRING | O14746. | ||||||||||||
PTM databases | |||||||||||||
| PhosphoSite | O14746. | ||||||||||||
Proteomic databases | |||||||||||||
| PRIDE | O14746. | ||||||||||||
Protocols and materials databases | |||||||||||||
| StructuralBiologyKnowledgebase | Search... | ||||||||||||
Genome annotation databases | |||||||||||||
| Ensembl | ENST00000310581; ENSP00000309572; ENSG00000164362. | ||||||||||||
| GeneID | 7015. | ||||||||||||
| KEGG | hsa:7015. | ||||||||||||
| UCSC | uc003jca.1. human. uc003jcc.1. human. | ||||||||||||
Organism-specific databases | |||||||||||||
| CTD | 7015. | ||||||||||||
| GeneCards | GC05M001306. | ||||||||||||
| H-InvDB | HIX0031945. | ||||||||||||
| HGNC | HGNC:11730. TERT. | ||||||||||||
| MIM | 178500. phenotype. 187270. gene+phenotype. 609135. phenotype. 613989. phenotype. | ||||||||||||
| neXtProt | NX_O14746. | ||||||||||||
| Orphanet | 1775. Dyskeratosis congenita. 88. Idiopathic aplastic anemia. 2032. Idiopathic pulmonary fibrosis. | ||||||||||||
| PharmGKB | PA36447. | ||||||||||||
| GenAtlas | Search... | ||||||||||||
Phylogenomic databases | |||||||||||||
| eggNOG | prNOG04020. | ||||||||||||
| HOGENOM | HBG282044. | ||||||||||||
| HOVERGEN | HBG000460. | ||||||||||||
| InParanoid | O14746. | ||||||||||||
| OMA | VETIFLG. | ||||||||||||
| PhylomeDB | O14746. | ||||||||||||
Enzyme and pathway databases | |||||||||||||
| Pathway_Interaction_DB | hif1_tfpathway. HIF-1-alpha transcription factor network. il2_pi3kpathway. IL2 signaling events mediated by PI3K. telomerasepathway. Regulation of Telomerase. | ||||||||||||
| Reactome | REACT_22172. Chromosome Maintenance. | ||||||||||||
Gene expression databases | |||||||||||||
| Bgee | O14746. | ||||||||||||
| CleanEx | HS_TERT. | ||||||||||||
| Genevestigator | O14746. | ||||||||||||
| GermOnline | ENSG00000164362. Homo sapiens. | ||||||||||||
Family and domain databases | |||||||||||||
| InterPro | IPR000477. RVT. IPR021891. Telomerase_RBD. IPR003545. Telomerase_RT. [Graphical view] | ||||||||||||
| KO | K11126. | ||||||||||||
| Pfam | PF00078. RVT_1. 1 hit. PF12009. Telomerase_RBD. 1 hit. [Graphical view] | ||||||||||||
| PRINTS | PR01365. TELOMERASERT. | ||||||||||||
| SMART | SM00975. Telomerase_RBD. 1 hit. [Graphical view] | ||||||||||||
| PROSITE | PS50878. RT_POL. 1 hit. [Graphical view] | ||||||||||||
| ProtoNet | Search... | ||||||||||||
Other | |||||||||||||
| NextBio | 27405. | ||||||||||||
| SOURCE | Search... | ||||||||||||
Entry information
| Entry name | TERT_HUMAN | ||||||||
| Accession | Primary (citable) accession number: O14746 Secondary accession number(s): O14783 Q8NG46 | ||||||||
| Entry history |
| ||||||||
| Entry status | Reviewed (UniProtKB/Swiss-Prot) | ||||||||
| Annotation program | Chordata Protein Annotation Program | ||||||||
| Disclaimer | Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. | ||||||||
Relevant documents
| Human chromosome 5 Human chromosome 5: entries, gene names and cross-references to MIM |
| Human entries with polymorphisms or disease mutations List of human entries with polymorphisms or disease mutations |
| Human polymorphisms and disease mutations Index of human polymorphisms and disease mutations |
| MIM cross-references Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot |
| PDB cross-references Index of Protein Data Bank (PDB) cross-references |
| SIMILARITY comments Index of protein domains and families |

Clusters with