Induced conformational changes activate the peptidoglycan synthase PBP1B.
Induced conformational changes activate the peptidoglycan synthase PBP1B.
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诱导的构象变化激活了肽聚糖合酶PBP1B。
DOI:
10.1111/mmi.14082
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发表时间:
2018-11
影响因子:
3.6
通讯作者:
Simorre JP
中科院分区:
文献类型:
--
作者:
Egan AJF;Maya-Martinez R;Ayala I;Bougault CM;Banzhaf M;Breukink E;Vollmer W;Simorre JP
Bacteria surround their cytoplasmic membrane with an essential, stress‐bearing peptidoglycan (PG) layer consisting of glycan chains linked by short peptides into a mesh‐like structure. Growing and dividing cells expand their PG layer using inner‐membrane anchored PG synthases, including Penicillin‐binding proteins (PBPs), which participate in dynamic protein complexes to facilitate cell wall growth. In Escherichia coli, and presumably other Gram‐negative bacteria, growth of the mainly single layered PG is regulated by outer membrane‐anchored lipoproteins. The lipoprotein LpoB is required to activate PBP1B, which is a major, bi‐functional PG synthase with glycan chain polymerising (glycosyltransferase) and peptide cross‐linking (transpeptidase) activities. In this work we show how the binding of LpoB to the regulatory UB2H domain of PBP1B activates both activities. Binding induces structural changes in the UB2H domain, which transduce to the two catalytic domains by distinct allosteric pathways. We also show how an additional regulator protein, CpoB, is able to selectively modulate the TPase activation by LpoB without interfering with GTase activation.
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影响因子:
3.5
作者:
CHEREPANOV, PP;WACKERNAGEL, W
通讯作者:
WACKERNAGEL, W
DOI:
10.1073/pnas.1400376111
发表时间:
2014-06-03
影响因子:
11.1
作者:
Egan, Alexander J. F.;Jean, Nicolas L.;Simorre, Jean-Pierre
通讯作者:
Simorre, Jean-Pierre
影响因子:
4.8
作者:
Born, Petra;Breukink, Eefjan;Vollmer, Waldemar
通讯作者:
Vollmer, Waldemar
影响因子:
9.9
作者:
通讯作者:
--
DOI:
10.1098/rstb.2015.0031
发表时间:
2015-10-05
期刊:
Philosophical transactions of the Royal Society of London. Series B, Biological sciences
影响因子:
--
作者:
Egan AJ;Biboy J;van't Veer I;Breukink E;Vollmer W
通讯作者:
Vollmer W