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Human DNA polymerase lambda possesses terminal deoxyribonucleotidyl transferase activity and can elongate RNA primers: implications for novel functions (Articolo in rivista)
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- Human DNA polymerase lambda possesses terminal deoxyribonucleotidyl transferase activity and can elongate RNA primers: implications for novel functions (Articolo in rivista) (literal)
- Anno
- 2003-01-01T00:00:00+01:00 (literal)
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Ramadan K, Maga G, Shevelev IV, Villani G, Blanco L, Hubscher U. (2003)
Human DNA polymerase lambda possesses terminal deoxyribonucleotidyl transferase activity and can elongate RNA primers: implications for novel functions
in Journal of Molecular Biology
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- Ramadan K, Maga G, Shevelev IV, Villani G, Blanco L, Hubscher U. (literal)
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- Titolo
- Human DNA polymerase lambda possesses terminal deoxyribonucleotidyl transferase activity and can elongate RNA primers: implications for novel functions (literal)
- Abstract
- DNA polymerase lambda is a novel enzyme of the family X of DNA polymerases. The recent demonstration of an intrinsic 5'-deoxyribose-5'-phosphate lyase activity, a template/primer dependent polymerase activity, a distributive manner of DNA synthesis and sequence similarity to DNA polymerase beta suggested a novel beta-like enzyme. All these properties support a role of DNA polymerase lambda in base excision repair. On the other hand, the biochemical properties of the polymerisation activity of DNA polymerase lambda are still largely unknown. Here we give evidence that human DNA polymerase lambda has an intrinsic terminal deoxyribonucleotidyl transferase activity that preferentially adds pyrimidines onto 3'OH ends of DNA oligonucleotides. Furthermore, human DNA polymerase lambda efficiently elongates an RNA primer hybridized to a DNA template. These two novel properties of human DNA polymerase lambda might suggest additional roles for this enzyme in DNA replication and repair processes. (literal)
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