Integrating chemical mutagenesis and whole-genome sequencing as a platform for forward and reverse genetic analysis of Chlamydia.

Integrating chemical mutagenesis and whole-genome sequencing as a platform for forward and reverse genetic analysis of Chlamydia.
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DOI:
10.1016/j.chom.2015.03.014
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发表时间:
2015-05-13
影响因子:
30.3
通讯作者:
Bastidas RJ
Bastidas RJ
中科院分区:
医学1区
文献类型:
--
作者:
Kokes M;Dunn JD;Granek JA;Nguyen BD;Barker JR;Valdivia RH;Bastidas RJ

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Gene inactivation by transposon insertion or allelic exchange is a powerful approach to probe gene function. Unfortunately, many microbes, including Chlamydia, are not amenable to routine molecular genetic manipulations. Here we describe an arrayed library of chemically-induced mutants of the genetically-intransigent pathogen Chlamydia trachomatis, in which all mutations have been identified by whole genome sequencing, providing a platform for reverse genetic applications. An analysis of possible loss-of-function mutations in the collection uncovered plasticity in the central metabolic properties of this obligate intracellular pathogen. We also describe the use of the library in a forward genetic screen that identified InaC as a bacterial factor that binds host ARF and 14-3-3 proteins to modulate F-actin assembly and Golgi redistribution around the pathogenic vacuole. This work provides a robust platform for reverse and forward genetic approaches in Chlamydia and should serve as a valuable resource to the community.
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