PoxA, yjeK, and elongation factor P coordinately modulate virulence and drug resistance in Salmonella enterica.
PoxA, yjeK, and elongation factor P coordinately modulate virulence and drug resistance in Salmonella enterica.
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DOI:
10.1016/j.molcel.2010.06.021
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发表时间:
2010-07-30
期刊:
影响因子:
16
通讯作者:
Fang FC
中科院分区:
文献类型:
--
作者:
Navarre WW;Zou SB;Roy H;Xie JL;Savchenko A;Singer A;Edvokimova E;Prost LR;Kumar R;Ibba M;Fang FC
We report an interaction between poxA, encoding a paralog of lysyl tRNA-synthetase, and the closely linked yjeK gene, encoding a putative 2,3-β-lysine aminomutase, that is critical for virulence and stress resistance in Salmonella enterica. Salmonella poxA and yjeK mutants share extensive phenotypic pleiotropy including attenuated virulence in mice, an increased ability to respire under nutrient limiting conditions, hypersusceptibility to a variety of diverse growth inhibitors and altered expression of multiple proteins including several encoded on the SPI-1 pathogenicity island. PoxA mediates post-translational modification of bacterial elongation factor P (EF-P), analogous to the modification of the eukaryotic EF-P homologue, eIF5A, with hypusine. The modification of EF-P is a mechanism of regulation whereby PoxA acts as an aminoacyl-tRNA synthetase that attaches an amino acid to a protein resembling tRNA rather than to a tRNA.
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DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
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发表时间:
2000-06-06
影响因子:
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