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词汇 telomerase
释义

Definition of telomerase in English:

telomerase

noun ˈtiːlə(ʊ)mɪəreɪzˈtɛlə(ʊ)mɪəreɪztəˈlō
Genetics
  • The enzyme in a eukaryote that repairs the telomeres of the chromosomes so that they do not become progressively shorter during successive rounds of chromosome replication.

    〔遗传〕端粒酶

    Example sentencesExamples
    • In nature, a chromosome can be lengthened by the enzyme telomerase, which adds new TTAGGG sequences to the end of the telomere.
    • Telomeres, the natural ends of linear chromosomes, are maintained by the specialized reverse transcriptase called telomerase.
    • In eukaryotic cells with telomeres composed of short tandem repeats, this involves the enzyme telomerase.
    • Human cells have an additional barrier to unfettered replication - most lack the chromosome repair enzyme called telomerase that rat cells possess.
    • If any components of the telomerase are missing, telomeres are gradually shortened and most cells die.

Definition of telomerase in US English:

telomerase

nountəˈlō
Genetics
  • An enzyme that adds nucleotides to telomeres, especially in cancer cells.

    Example sentencesExamples
    • Human cells have an additional barrier to unfettered replication - most lack the chromosome repair enzyme called telomerase that rat cells possess.
    • Telomeres, the natural ends of linear chromosomes, are maintained by the specialized reverse transcriptase called telomerase.
    • In nature, a chromosome can be lengthened by the enzyme telomerase, which adds new TTAGGG sequences to the end of the telomere.
    • In eukaryotic cells with telomeres composed of short tandem repeats, this involves the enzyme telomerase.
    • If any components of the telomerase are missing, telomeres are gradually shortened and most cells die.
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