Targeting the cell wall of Mycobacterium tuberculosis: structure and mechanism of L,D-transpeptidase 2.
Targeting the cell wall of Mycobacterium tuberculosis: structure and mechanism of L,D-transpeptidase 2.
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DOI:
10.1016/j.str.2012.09.016
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发表时间:
2012-12-05
期刊:
影响因子:
--
通讯作者:
Bianchet MA
中科院分区:
文献类型:
--
作者:
Erdemli SB;Gupta R;Bishai WR;Lamichhane G;Amzel LM;Bianchet MA
With multi-drug resistant cases of tuberculosis increasing globally, better antibiotic drugs and novel drug-targets are becoming an urgent need. Traditional β-lactam antibiotics that disrupt the D,D-transpeptidases are not effective against mycobacteria, in part because mycobacteria rely mostly on β-lactam insensitive L,D-transpeptidases for biosynthesis and maintenance of their peptidoglycan layer. This reliance plays a major role in drug-resistance and persistence of Mycobacterium tuberculosis (Mtb) infections. The crystal structure at 1.7 Å resolution of the Mtb L,D-transpeptidase LdtMt2 containing a bound peptidoglycan fragment, reported here, provides information about catalytic site organization as well as substrate recognition by the enzyme. Based on our structural, kinetic, and calorimetric data, we propose a catalytic mechanism for LdtMt2 in which both acyl-acceptor and acyl-donor substrates reach the catalytic site from the same, rather than different, entrances. Together, this information provides vital insights for the development of novel drugs targeting this validated yet unexploited enzyme.
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DOI:
10.1107/s0907444911007232
发表时间:
2011-04
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Krissinel E
通讯作者:
Krissinel E
影响因子:
6.4
作者:
Keren I;Minami S;Rubin E;Lewis K
通讯作者:
Lewis K
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:
3.2
作者:
Lavollay, Marie;Arthur, Michel;Mainardi, Jean-Luc
通讯作者:
Mainardi, Jean-Luc
DOI:
10.1164/rccm.200210-1125oc
发表时间:
2003-05-15
影响因子:
24.7
作者:
Jindani, A;Doré, CJ;Mitchison, DA
通讯作者:
Mitchison, DA