Molecular basis of β-lactam antibiotic resistance of ESKAPE bacterium E. faecium Penicillin Binding Protein PBP5.
Molecular basis of β-lactam antibiotic resistance of ESKAPE bacterium E. faecium Penicillin Binding Protein PBP5.
复制标题
DOI:
10.1038/s41467-023-39966-5
复制
发表时间:
2023-07-17
影响因子:
16.6
通讯作者:
Peti, Wolfgang
中科院分区:
文献类型:
--
作者:
Hunashal, Yamanappa;Kumar, Ganesan Senthil;Choy, Meng S.;D'Andrea, Everton D.;Da Silva Santiago, Andre;Schoenle, Marta V.;Desbonnet, Charlene;Arthur, Michel;Rice, Louis B.;Page, Rebecca;Peti, Wolfgang
Penicillin-binding proteins (PBPs) are essential for the formation of the bacterial cell wall. They are also the targets of β-lactam antibiotics. In Enterococcus faecium, high levels of resistance to β-lactams are associated with the expression of PBP5, with higher levels of resistance associated with distinct PBP5 variants. To define the molecular mechanism of PBP5-mediated resistance we leveraged biomolecular NMR spectroscopy of PBP5 – due to its size (>70 kDa) a challenging NMR target. Our data show that resistant PBP5 variants show significantly increased dynamics either alone or upon formation of the acyl-enzyme inhibitor complex. Furthermore, these variants also exhibit increased acyl-enzyme hydrolysis. Thus, reducing sidechain bulkiness and expanding surface loops results in increased dynamics that facilitates acyl-enzyme hydrolysis and, via increased β-lactam antibiotic turnover, facilitates β-lactam resistance. Together, these data provide the molecular basis of resistance of clinical E. faecium PBP5 variants, results that are likely applicable to the PBP family. Penicillin Binding Proteins (PBPs) are the main targets of β-lactam antibiotics. Here the authors use NMR spectroscopy, crystallography and microbiology to define the dynamics of E. faecium PBP5 in solution and show that increased acyl-enzyme hydrolysis correlates with increased resistance.
登录
查看更多内容
影响因子:
15
作者:
Fishovitz, Jennifer;Rojas-Altuve, Alzoray;Otero, Lisandro H.;Dawley, Matthew;Carrasco-Lopez, Cesar;Chang, Mayland;Hermoso, Juan A.;Mobashery, Shahriar
通讯作者:
Mobashery, Shahriar
影响因子:
4.9
作者:
Galloway-Pena, Jessica R.;Rice, Louis B.;Murray, Barbara E.
通讯作者:
Murray, Barbara E.
DOI:
10.1038/nsb858
发表时间:
2002-11-01
期刊:
NATURE STRUCTURAL BIOLOGY
影响因子:
--
作者:
Lim, D;Strynadka, NCJ
通讯作者:
Strynadka, NCJ
DOI:
10.1107/s0907444909052925
发表时间:
2010-02
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者:
Zwart PH
影响因子:
11.8
作者:
Boucher, Helen W.;Talbot, George H.;Bartlett, John
通讯作者:
Bartlett, John