Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.


 (tə-lŏm′ə-rās′, -rāz′)
An enzyme that is found in the telomeres of chromosomes in germ cells, stem cells, and most cancer cells and that preserves the length of telomeres across cell divisions.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Biochemistry) an enzyme that is involved in the formation and repair of telomeres, so that chromosomes are not shortened during cell division
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(təˈlɒm əˌreɪs, -ˌreɪz)
an enzyme, active chiefly in tumors and reproductive cells, that causes telomeres to lengthen: facilitates cell division and may account for the immortality of cancer cells.
[telomere + -ase]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.telomerase - an enzyme in eukaryotic cells that can add telomeres to the ends of chromosomes after they divide
enzyme - any of several complex proteins that are produced by cells and act as catalysts in specific biochemical reactions
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Results: We identified a potentially damaging rare variant-a heterozygous mutation c.2146G>A in exon 6 of the gene encoding for telomerase reverse transcriptase (TERT), which results in an amino acid substitution (p.Ala716Thr).
It has been hypothesised that telomere length and telomerase activity may get reduced in hypertensive patients.
First, we need to focus on nutrients that increase telomerase activity.
One of the promising targets in cancer therapy is the enzyme telomerase. Normally, telomerase prevents telomeres from shortening in germ and stem cells, which helps with development.
Decoding the architecture of the enzyme, called telomerase, could lead to drugs that slow or block the ageing process, along with new treatments for cancer, they reported in the journal Nature.
Researchers at UC Berkeley have now mapped out the structure of telomerase - an enzyme known to play a key role in aging and cancer - in more detail than ever before, and the breakthrough could inform a new generation of highly-targeted drugs.
TEMPE, Ariz., February 27, 2018 -- A new study performed here has uncovered a crucial step in the telomerase enzyme catalytic cycle that determines the ability of the human telomerase enzyme to synthesize DNA "repeats" (specific DNA segments of six nucleotides) onto chromosome ends, and so afford immortality in cells.
In proliferative cells, the length and integrity of telomeres are maintained by the action of a specialized reverse transcriptase, telomerase [16].
In contrast, in most cancer cells, levels of the enzyme telomerase, which lengthens telomeres, are elevated, allowing them to divide indefinitely.
In healthy stem cell reproduction, the enzyme telomerase prevents the shortening of linear DNA ends (known as telomeres) with each replication.
Scientists from the US, Argentina, Israel, India, and Europe discuss electron cryptomography and its application to bacterial chemoreceptor arrays, designing symmetric protein nanomaterials, weighted ensemble simulation, eukaryotic transcription initiation machinery, biophysical models of protein evolution, rate constants and mechanisms of protein-ligand binding, the integration of bacterial small RNAs in regulatory networks, recognition of client proteins by the proteasome, chemokine receptor structures and function, progress in human Tetrahymena telomerase structure determination, the theory and modeling of RNA structure and interactions with metal ions and small molecules, and reconstructing ancient proteins to understand the causes of structure and function.