Roles of metal ions in nucleases

被引:88
作者
Dupureur, Cynthia M. [1 ,2 ]
机构
[1] Univ Missouri, Dept Chem & Biochem, St Louis, MO 63121 USA
[2] Univ Missouri, Ctr Nanosci, St Louis, MO 63121 USA
关键词
D O I
10.1016/j.cbpa.2008.01.012
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The hydrolysis of phosphodiester bonds by metallonucleases is crucial to most aspects of nucleic acid processing. In recent years, studies of the classical restriction endonucleases have given way to the characterization of metallonucleases with widely divergent active site motifs. These developments fuel debates regarding the roles of metal ions in these enzymes. It is fortuitous that the current literature also includes the increased application of a variety of computational techniques to test the roles of metal ions in nucleic acid hydrolysis by these systems. This includes recent proposals and indirect evidence that these enzymes utilize metal ion movement in these reactions.
引用
收藏
页码:250 / 255
页数:6
相关论文
共 41 条
[21]   The zinc ion in the HNH motif of the endonuclease domain of colicin E7 is not required for DNA binding but is essential for DNA hydrolysis [J].
Ku, WY ;
Liu, YW ;
Hsu, YC ;
Liao, CC ;
Liang, PH ;
Yuan, HS ;
Chak, KF .
NUCLEIC ACIDS RESEARCH, 2002, 30 (07) :1670-1678
[22]   Two-metal-ion mechanism for hammerhead-ribozyme catalysis [J].
Leclerc, F ;
Karplus, M .
JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (07) :3395-3409
[23]   Very fast empirical prediction and rationalization of protein pKa values [J].
Li, H ;
Robertson, AD ;
Jensen, JH .
PROTEINS-STRUCTURE FUNCTION AND BIOINFORMATICS, 2005, 61 (04) :704-721
[24]   Chemical mechanism of DNA cleavage by the homing endonuclease I-PpoI [J].
Mannino, SJ ;
Jenkins, CL ;
Raines, RT .
BIOCHEMISTRY, 1999, 38 (49) :16178-16186
[25]   Structure-based analysis of the metal-dependent mechanism of H-N-H endonucleases [J].
Maté, MJ ;
Kleanthous, C .
JOURNAL OF BIOLOGICAL CHEMISTRY, 2004, 279 (33) :34763-34769
[26]  
MISHRA N, 2002, NUCL MOL BIOL APPL
[27]   Probing the two-metal ion mechanism in the restriction endonuclease BamHI [J].
Mones, Letif ;
Kulhanek, Petr ;
Florian, Jan ;
Simon, Istvan ;
Fuxreiter, Monika .
BIOCHEMISTRY, 2007, 46 (50) :14514-14523
[28]   Metal-binding sites at the active site of restriction endonuclease BamHI can conform to a one-ion mechanism [J].
Mones, Letif ;
Simon, Istvan ;
Fuxreiter, Monika .
BIOLOGICAL CHEMISTRY, 2007, 388 (01) :73-78
[29]   Crystal structures of RNase H bound to an RNA/DNA hybrid: Substrate specificity and metal-dependent catalysis [J].
Nowotny, M ;
Gaidamakov, SA ;
Crouch, RJ ;
Yang, W .
CELL, 2005, 121 (07) :1005-1016
[30]   Homing in on the role of transition metals in the HNH motif of colicin endonucleases [J].
Pommer, AJ ;
Kühlmann, UC ;
Cooper, A ;
Hemmings, AM ;
Moore, GR ;
James, R ;
Kleanthous, C .
JOURNAL OF BIOLOGICAL CHEMISTRY, 1999, 274 (38) :27153-27160