Structural Basis for Bulky-Adduct DNA-Lesion Recognition by the Nucleotide Excision Repair Protein Rad14
作者:Nina Simon、Charlotte Ebert、Sabine Schneider
DOI:10.1002/chem.201602438
日期:2016.7.25
containing the polycyclic, aromatic amine C8‐guanine lesions acetylaminophenyl, acetylaminonaphthyl, acetylaminoanthryl, and acetylaminopyrenyl, as well as their crystal structures in complex with the yeast XPA homologue Rad14. This work further substantiates the indirect lesion‐detection mechanism employed by the NER system that recognises destabilised and deformable DNA structures.
杂环芳族胺与嘌呤碱基反应,导致庞大的DNA加合物,引起加成突变。这种结构上不同的损伤是核苷酸切除修复(NER)的底物。据认为,NER机械识别并验证了扭曲的DNA构象,还涉及到了干性色素干性皮肤A和C组蛋白(XPA,XPC),它们充当了DNA底物与其他几种NER蛋白之间的支架。在这里,我们介绍了包含多环芳香胺C8-鸟嘌呤损伤的乙酰氨基苯基,乙酰氨基萘,乙酰氨基蒽基和乙酰氨基吡啶基的DNA分子的合成,以及与酵母XPA同源Rad14复合的晶体结构。