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Visualization of the interaction between archaeal DNA polymerase and uracil-containing DNA by atomic force microscopy
https://repo.qst.go.jp/records/43959
https://repo.qst.go.jp/records/4395982db4a97-0671-40dd-bd9b-06e2755f49ae
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2006-01-06 | |||||
タイトル | ||||||
タイトル | Visualization of the interaction between archaeal DNA polymerase and uracil-containing DNA by atomic force microscopy | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
Asami, Yasuo
× Asami, Yasuo× Murakami, Masahiro× Shimizu, Masatomi× M, Pisani Francesca× Hayata, Isamu× Nohmi, Takehiko× 村上 正弘× 早田 勇× 能美 健彦 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Deamination of cytosine to uracil is a hydrolytic reaction that is greatly accelerated at high temperatures. The resulting uracil pairs with adenine during DNA replication, thereby inducing G:C to A:T transitions in the progeny. Interestingly, B-family DNA polymerases from hyperthermophilic Archaea recognize the presence of uracil in DNA and synthesis. To better understand the recognition mechanism, the binding modes of DNA polymerase B1 of Sulfolobus solfataricus (Pol B1) to uracil-containing DNA were examined by gel mobility shift assays and atomic force microscopy. Although PolB1 per se spetifically binds to uracil-containing single-stranded DNA, the binding efficiency was substantially enhanced by the initiation of DNA synthesis. Analysis by the atomic force microscopy showed a number of double-stranded DNA (dsDNA) in the products of DNA synthesis. The generation of ds DNA was significantly inhibited, however, by the presence of template uracil, and intermediates where monomeric forms of Pol B1 appeared to bind to uracil-containing DNA were observed. There results suggest that Pol B1 more efficiently recognizes uracil in DNA during DNA synthesis rather than during random diffusion in solution, and that single molecules of Pol B1 bind to template uracil and stall DNA synthesis. | |||||
書誌情報 |
Genes to Cells 巻 11, p. 3-11, 発行日 2006 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1356-9597 |