A Burkholderia pseudomallei toxin inhibits helicase activity of translation factor eIF4A.

A Burkholderia pseudomallei toxin inhibits helicase activity of translation factor eIF4A.
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Burkholderia pseudomallei毒素抑制翻译因子EIF4A的解旋酶活性。

DOI:
10.1126/science.1211915
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发表时间:
2011-11-11
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Rice DW
Rice DW
中科院分区:
其他
文献类型:
--
作者:
Cruz-Migoni A;Hautbergue GM;Artymiuk PJ;Baker PJ;Bokori-Brown M;Chang CT;Dickman MJ;Essex-Lopresti A;Harding SV;Mahadi NM;Marshall LE;Mobbs GW;Mohamed R;Nathan S;Ngugi SA;Ong C;Ooi WF;Partridge LJ;Phillips HL;Raih MF;Ruzheinikov S;Sarkar-Tyson M;Sedelnikova SE;Smither SJ;Tan P;Titball RW;Wilson SA;Rice DW

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The structure of BPSL1549, a protein of unknown function from Burkholderia pseudomallei reveals a similarity to E. coli cytotoxic necrotizing factor 1. We found that BPSL1549 acted as a potent cytotoxin against eukaryotic cells and was lethal when administered to mice. Expression levels of bpsl1549 correlate with conditions expected to promote or suppress pathogenicity. BPSL1549 promotes deamidation of Gln339 of the translation initiation factor eIF4A, abolishing its helicase activity and inhibiting translation. We propose to name BPSL1549 Burkholderia Lethal Factor 1 (BLF1).
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