Jansen Jacob G, Fousteri Maria I, de Wind Niels
Department of Toxicogenetics, Leiden University Medical Center, PO Box 9600, 2300 RC Leiden, The Netherlands.
Mol Cell. 2007 Nov 30;28(4):522-9. doi: 10.1016/j.molcel.2007.11.005.
The replication of damaged DNA templates by translesion synthesis (TLS) is associated with mutagenesis and carcinogenesis. This perspective discusses the different levels at which TLS may be controlled and proposes a model for TLS of severely helix-distorting DNA lesions that includes a decisive role for the Rad9-Hus1-Rad1 DNA-damage-signaling clamp. The dual involvement of this clamp in both DNA-damage signaling and TLS may have profound implications in determining cellular responses to DNA damage.
通过跨损伤合成(TLS)对受损DNA模板进行复制与诱变和致癌作用相关。本观点讨论了TLS可能受到控制的不同层面,并提出了一个针对严重扭曲螺旋的DNA损伤的TLS模型,该模型认为Rad9-Hus1-Rad1 DNA损伤信号钳起决定性作用。这种钳在DNA损伤信号传导和TLS中的双重作用可能对确定细胞对DNA损伤的反应具有深远影响。