Zinc and ATP Binding of the Hexameric AAA-ATPase PilF from Thermus thermophilus
Zinc and ATP Binding of the Hexameric AAA-ATPase PilF from Thermus thermophilus
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嗜热栖热菌六聚体 AAA-ATPase PilF 的锌和 ATP 结合
DOI:
10.1074/jbc.m114.598656
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发表时间:
2014
期刊:
影响因子:
--
通讯作者:
Averhoff B
中科院分区:
文献类型:
--
作者:
Salzer R;Herzberg M;Nies DH;Joos F;Rathmann B;Thielmann Y;Averhoff B
The traffic AAA-ATPase PilF is essential for pilus biogenesis and natural transformation ofThermus thermophilusHB27. Recently, we showed that PilF forms hexameric complexes containing six zinc atoms coordinated by conserved tetracysteine motifs. Here we report that zinc binding is essential for complex stability. However, zinc binding is neither required for pilus biogenesis nor natural transformation. A number of the mutants did not exhibit any pili during growth at 64 °C but still were transformable. This leads to the conclusion that type 4 pili and the DNA translocator are distinct systems. At lower growth temperatures (55 °C) the zinc-depleted multiple cysteine mutants were hyperpiliated but defective in pilus-mediated twitching motility. This provides evidence that zinc binding is essential for the role of PilF in pilus dynamics. Moreover, we found that zinc binding is essential for complex stability but dispensable for ATPase activity. In contrast to many polymerization ATPases from mesophilic bacteria, ATP binding is not required for PilF complex formation; however, it significantly increases complex stability. These data suggest that zinc and ATP binding increase complex stability that is important for functionality of PilF under extreme environmental conditions.
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影响因子:
11.4
作者:
Miertzschke, Mandy;Koerner, Carolin;Vetter, Ingrid R.;Keilberg, Daniela;Hot, Edina;Leonardy, Simone;Sogaard-Andersen, Lotte;Wittinghofer, Alfred
通讯作者:
Wittinghofer, Alfred
DOI:
10.1073/pnas.97.7.3067
发表时间:
2000
影响因子:
11.1
作者:
S. Krause;M. Bárcena;W. Pansegrau;R. Lurz;J. Carazo;E. Lanka
通讯作者:
E. Lanka
影响因子:
4.8
作者:
Burkhardt, Janin;Vonck, Janet;Averhoff, Beate
通讯作者:
Averhoff, Beate
DOI:
--
发表时间:
2003
期刊:
Frontiers in Bioscience
影响因子:
--
作者:
Inês Chen;D. Dubnau
通讯作者:
D. Dubnau
DOI:
10.1111/j.1742-4658.2006.05335.x
发表时间:
2006
期刊:
The FEBS Journal
影响因子:
--
作者:
Judit Rumszauer;Cornelia Schwarzenlander;B. Averhoff
通讯作者:
B. Averhoff