Lateral interactions govern self-assembly of the bacterial biofilm matrix protein BslA.
Lateral interactions govern self-assembly of the bacterial biofilm matrix protein BslA.
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DOI:
10.1073/pnas.2312022120
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发表时间:
2023-11-07
影响因子:
11.1
通讯作者:
MacPhee CE
中科院分区:
文献类型:
--
作者:
Arnaouteli S;Bamford NC;Brandani GB;Morris RJ;Schor M;Carrington JT;Hobley L;van Aalten DMF;Stanley-Wall NR;MacPhee CE
The soil bacterium Bacillus subtilis is a model organism to investigate the formation of biofilms, the predominant form of microbial life. The secreted protein BslA self-assembles at the surface of the biofilm to give the B. subtilis biofilm its characteristic hydrophobicity. To understand the mechanism of BslA self-assembly at interfaces, here we built a molecular model based on the previous BslA crystal structure and the newly determined crystal structure of the BslA paralogue YweA. Our analysis revealed two conserved protein-protein interaction interfaces supporting BslA self-assembly into an infinite 2d lattice that fits previously determined transmission microscopy images. Molecular dynamics simulations and in vitro protein assays further support our model of BslA elastic film formation, while mutagenesis experiments highlight the importance of the identified interactions for biofilm structure. Based on this knowledge, YweA was engineered to form more stable elastic films and rescue biofilm structure in bslA deficient strains. These findings shed new light on protein film assembly and will inform the development of BslA technologies which range from surface coatings to emulsions in fast-moving consumer goods.
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影响因子:
3.6
作者:
Erskine E;Morris RJ;Schor M;Earl C;Gillespie RMC;Bromley KM;Sukhodub T;Clark L;Fyfe PK;Serpell LC;Stanley-Wall NR;MacPhee CE
通讯作者:
MacPhee CE
DOI:
10.1107/s0907444911007578
发表时间:
2011-04
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Cowtan K;Emsley P;Wilson KS
通讯作者:
Wilson KS
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:
3.9
作者:
Brandani, Giovanni B.;Schor, Marieke;Zachariae, Ulrich
通讯作者:
Zachariae, Ulrich
影响因子:
4.5
作者:
Qin, Yuxuan;Angelini, Leticia Lima;Chai, Yunrong
通讯作者:
Chai, Yunrong