First crystal structures of 1-deoxy-D-xylulose 5-phosphate synthase (DXPS) from Mycobacterium tuberculosis indicate a distinct mechanism of intermediate stabilization.
First crystal structures of 1-deoxy-D-xylulose 5-phosphate synthase (DXPS) from Mycobacterium tuberculosis indicate a distinct mechanism of intermediate stabilization.
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结核分枝杆菌1-脱氧-D-木酮糖5-磷酸合酶(DXPS)的第一晶体结构表明了中间稳定的独特机制。
DOI:
10.1038/s41598-022-11205-9
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发表时间:
2022-05-04
影响因子:
4.6
通讯作者:
中科院分区:
文献类型:
--
作者:
The development of drug resistance by Mycobacterium tuberculosis and other pathogenic bacteria emphasizes the need for new antibiotics. Unlike animals, most bacteria synthesize isoprenoid precursors through the MEP pathway. 1-Deoxy-d-xylulose 5-phosphate synthase (DXPS) catalyzes the first reaction of the MEP pathway and is an attractive target for the development of new antibiotics. We report here the successful use of a loop truncation to crystallize and solve the first DXPS structures of a pathogen, namely M. tuberculosis (MtDXPS). The main difference found to other DXPS structures is in the active site where a highly coordinated water was found, showing a new mechanism for the enamine-intermediate stabilization. Unlike other DXPS structures, a “fork-like” motif could be identified in the enamine structure, using a different residue for the interaction with the cofactor, potentially leading to a decrease in the stability of the intermediate. In addition, electron density suggesting a phosphate group could be found close to the active site, provides new evidence for the D-GAP binding site. These results provide the opportunity to improve or develop new inhibitors specific for MtDXPS through structure-based drug design.
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影响因子:
3.5
作者:
Courtens, Charlotte;Risseeuw, Martijn;Van Calenbergh, Serge
通讯作者:
Van Calenbergh, Serge
影响因子:
2.1
作者:
Altincicek, B;Hintz, M;Jomaa, H
通讯作者:
Jomaa, H
DOI:
10.1107/s2053230x15024619
发表时间:
2016-02
期刊:
Acta crystallographica. Section F, Structural biology communications
影响因子:
--
作者:
Deller MC;Kong L;Rupp B
通讯作者:
Rupp B
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:
4.8
作者:
Estévez, JM;Cantero, A;León, P
通讯作者:
León, P