The arginine finger of the Bloom syndrome protein: its structural organization and its role in energy coupling
文献类型：期刊论文
| 作者 | Ren, H ; Dou, SX ; Rigolet, P ; Yang, Y ; Wang, PY ; Amor-Gueret, M ; Xi, XG |
| 刊名 | NUCLEIC ACIDS RESEARCH
 |
| 出版日期 | 2007 |
| 卷号 | 35期号:18页码:6029 |
| ISSN号 | 0305-1048 |
| 中文摘要 | RecQ family helicases are essential in maintaining chromosomal DNA stability and integrity. Despite extensive studies, the mechanisms of these enzymes are still poorly understood. Crystal structures of many helicases reveal a highly conserved arginine residue located near the gamma-phosphate of ATP. This residue is widely recognized as an arginine finger, and may sense ATP binding and hydrolysis, and transmit conformational changes. We investigated the existence and role of the arginine finger in the Bloom syndrome protein (BLM), a RecQ family helicase, in ATP hydrolysis and energy coupling. Our studies by combination of structural modelling, site-directed mutagenesis and biochemical and biophysical approaches, demonstrate that mutations of residues interacting with the -phosphate of ATP or surrounding the ATP-binding sites result in severe impairment in the ATPase activity of BLM. These mutations also impair BLMs DNA-unwinding activities, but do not affect its ATP and DNA-binding abilities. These data allow us to identify R982 as the residue that functions as a BLM arginine finger. Our findings further indicate how the arginine finger is precisely positioned by the conserved motifs with respect to the gamma-phosphate. |
| 收录类别 | SCI |
| 公开日期 | 2013-09-23 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/44901]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Ren, H,Dou, SX,Rigolet, P,et al. The arginine finger of the Bloom syndrome protein: its structural organization and its role in energy coupling[J]. NUCLEIC ACIDS RESEARCH,2007,35(18):6029. |
| APA | Ren, H.,Dou, SX.,Rigolet, P.,Yang, Y.,Wang, PY.,...&Xi, XG.(2007).The arginine finger of the Bloom syndrome protein: its structural organization and its role in energy coupling.NUCLEIC ACIDS RESEARCH,35(18),6029. |
| MLA | Ren, H,et al."The arginine finger of the Bloom syndrome protein: its structural organization and its role in energy coupling".NUCLEIC ACIDS RESEARCH 35.18(2007):6029. |
入库方式： OAI收割
来源：物理研究所
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