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Aggregative organization enhances the DNA end-joining process that is mediated by DNA-dependent protein kinase
https://repo.qst.go.jp/records/44669
https://repo.qst.go.jp/records/446699fcc86ea-162c-4004-8842-06260f2ea2ec
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2006-10-13 | |||||
タイトル | ||||||
タイトル | Aggregative organization enhances the DNA end-joining process that is mediated by DNA-dependent protein kinase | |||||
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 |
Takahagi, Masahiko
× Takahagi, Masahiko× Tatsumi, Kouichi× 高萩 真彦× 巽 紘一 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The occurrence of DNA double strand breaks (DSBs) in the nucleus provokes in its structural organization a large-scale alteration whose molecular basis is still mostly unclear. Here, we show that DSBs trigger preferential assembly of nucleoproteins in human cellular fractions and that they mediate the separation of large protein-DNA aggregates from aqueous solution. The interaction among the aggregative nucleoproteins presents a dynamic condition that allows the effective interaction of nucleoproteins with external molecules like free ATP and facilitates intrinsic DNA end-joining activity. This aggregative organization is functionally coacervate-like. The key component is DNA-dependent protein kinase, DNA-PK, which can be characterized as a DNA-specific aggregation factor as well as a nuclear scaffold/matrix-interactive factor. In the context of aggregation, the kinase activity of DNA-PK is essential for efficient DNA end-joining. The massive and functional concentration of nucleoproteins on DNA in vitro may represent a possible status of nuclear dynamics in vivo, which probably includes the DNA-PK-dependent response to multiple DSBs. |
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書誌情報 |
The FEBS Journal 巻 273, 号 13, p. 3063-3075, 発行日 2006-07 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1742-464X |