نتایج جستجو برای: random mutagenesis

تعداد نتایج: 309957  

Journal: :Applied and environmental microbiology 2008
Yu Yang Philip E Stewart Xiaoguang Shi Chunhao Li

Here, we report successful transposon mutagenesis in the oral spirochete Treponema denticola. A modified Himar1 transposon, including a new antibiotic selection cassette for T. denticola, generated mutations affecting cell division, transport, and chemotaxis, among other processes. This random mutagenesis system should facilitate research on the biology and pathogenesis of this spirochete, whic...

Journal: :Journal of bacteriology 2003
Sheena McGowan Jennifer R O'Connor Jackie K Cheung Julian I Rood

The response regulator VirR and its cognate sensor histidine kinase, VirS, are responsible for toxin gene regulation in the human pathogen Clostridium perfringens. The C-terminal domain of VirR (VirRc) contains the functional FxRxHrS motif, which is involved in DNA binding and is conserved in many regulatory proteins. VirRc was cloned, purified, and shown by in vivo and in vitro studies to comp...

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