Structural cycle of the Thermus thermophilus PilF ATPase: the powering of type IVa pilus assembly.
Structural cycle of the Thermus thermophilus PilF ATPase: the powering of type IVa pilus assembly.
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DOI:
10.1038/s41598-018-32218-3
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发表时间:
2018-09-19
影响因子:
4.6
通讯作者:
Derrick JP
中科院分区:
文献类型:
--
作者:
Collins R;Karuppiah V;Siebert CA;Dajani R;Thistlethwaite A;Derrick JP
Type IV pili are responsible for a diverse range of functions, including twitching motility and cell adhesion. Assembly of the pilus fiber is driven by a cytoplasmic ATPase: it interacts with an inner membrane complex of biogenesis proteins which, in turn, bind to nascent pilin subunits and mediate fiber assembly. Here we report the structural characterization of the PilF TFP assembly ATPase from Thermus thermophilus. The crystal structure of a recombinant C-terminal fragment of PilF revealed bound, unhydrolysed ATP, although the full length complex was enzymatically active. 3D reconstructions were carried out by single particle cryoelectron microscopy for full length apoprotein PilF and in complex with AMPPNP. The structure forms an hourglass-like shape, with the ATPase domains in one half and the N1 domains in the second half which, we propose, interact with the other pilus biogenesis components. Molecular models for both forms were generated: binding of AMPPNP causes an upward shift of the N1 domains towards the ATPase domains of ~8 Å. We advocate a model in which ATP hydrolysis is linked to displacement of the N1 domains which is associated with lifting pilin subunits out of the inner membrane, and provide the activation energy needed to form the pilus fiber.
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影响因子:
48
作者:
Kucukelbir, Alp;Sigworth, Fred J.;Tagare, Hemant D.
通讯作者:
Tagare, Hemant D.
DOI:
10.1126/science.aad2001
发表时间:
2016-03-11
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Chang YW;Rettberg LA;Treuner-Lange A;Iwasa J;Søgaard-Andersen L;Jensen GJ
通讯作者:
Jensen GJ
影响因子:
48
作者:
Li, Xueming;Mooney, Paul;Zheng, Shawn;Booth, Christopher R.;Braunfeld, Michael B.;Gubbens, Sander;Agard, David A.;Cheng, Yifan
通讯作者:
Cheng, Yifan
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
DOI:
10.1038/nrmicro2762
发表时间:
2012-04-02
期刊:
Nature reviews. Microbiology
影响因子:
--
作者:
通讯作者:
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