Structure of apo- and monometalated forms of NDM-1--a highly potent carbapenem-hydrolyzing metallo-β-lactamase.
Structure of apo- and monometalated forms of NDM-1--a highly potent carbapenem-hydrolyzing metallo-β-lactamase.
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NDM-1的Apo-和单位净形式的结构 - 高度有效的碳青霉烯酸化金属元素-β-内酰胺酶。
DOI:
10.1371/journal.pone.0024621
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发表时间:
2011
期刊:
影响因子:
3.7
通讯作者:
Joachimiak A
中科院分区:
文献类型:
--
作者:
Kim Y;Tesar C;Mire J;Jedrzejczak R;Binkowski A;Babnigg G;Sacchettini J;Joachimiak A
The New Delhi Metallo-β-lactamase (NDM-1) gene makes multiple pathogenic microorganisms resistant to all known β-lactam antibiotics. The rapid emergence of NDM-1 has been linked to mobile plasmids that move between different strains resulting in world-wide dissemination. Biochemical studies revealed that NDM-1 is capable of efficiently hydrolyzing a wide range of β-lactams, including many carbapenems considered as “last resort” antibiotics. The crystal structures of metal-free apo- and monozinc forms of NDM-1 presented here revealed an enlarged and flexible active site of class B1 metallo-β-lactamase. This site is capable of accommodating many β-lactam substrates by having many of the catalytic residues on flexible loops, which explains the observed extended spectrum activity of this zinc dependent β-lactamase. Indeed, five loops contribute “keg” residues in the active site including side chains involved in metal binding. Loop 1 in particular, shows conformational flexibility, apparently related to the acceptance and positioning of substrates for cleavage by a zinc-activated water molecule.
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影响因子:
2.9
作者:
Fabiane, SM;Sohi, MK;Sutton, BJ
通讯作者:
Sutton, BJ
影响因子:
4.9
作者:
Castanheira, M;Toleman, MA;Walsh, TR
通讯作者:
Walsh, TR
DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
影响因子:
14.9
作者:
ASLANIDIS, C;DEJONG, PJ
通讯作者:
DEJONG, PJ
影响因子:
4.9
作者:
Docquier, Jean-Denis;Benvenuti, Manuela;Mangani, Stefano
通讯作者:
Mangani, Stefano