Back to article: Evading plant immunity: feedback control of the T3SS in Pseudomonas syringae

FIGURE 1: The regulation of hrpL transcription in P. syringae.

Organisation of the bi-directional promoter region between hrpL and hrpJ, including known binding sites for σ54, IHF, and HrpRS. HrpS activator function is regulated antagonistically by HrpV and HrpG. HrpL promotes transcription of hrpJ and other hrp/hrc operons via the hrp-box (red boxes). This study proposes a mechanism of negative autogenous control dependent on RNAP-HrpL binding at the hrpJ promoter (dashed red line). Figure reproduced from Waite et al. 2017 (doi: 10.1128/mBio.02273-16) under the Creative Commons CC BY 4.0 license.

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