E.coli eSGA-eMAP

Auxotrophic and Prototrophic Conditional Genetic Networks Reveal the Functional Rewiring of Transcription Factors in Escherichia coli

Bacterial transcription factors (TFs) are widely studied in Escherichia coli. Yet, it remains unclear how individual genes in the underlying pathways of TF machinery operate together during environmental challenge. Here, we address this by applying an unbiased, quantitative synthetic genetic interaction (GI) approach to measure pairwise GIs, among all TF genes in E. coli under auxotrophic (rich medium) and prototrophic (minimal medium) static growth conditions. The resulting static and differential GI networks reveal condition-dependent GIs, widespread changes among TF genes in metabolism, and new roles for uncharacterized TFs (YjdC, YneJ, YdiP) as regulators of cell division, putrescine utilization pathway, and cold shock adaptation, respectively. Pan-bacterial conservation suggests TF genes with GIs are co-conserved in evolution. Together, our results suggest the global organization of E. coli TFs, and remodeling of genetic backup systems for TFs under environmental change, which is essential for controlling the bacterial transcriptional regulatory circuits.
From this website, you can access and download annotations, interactions and supplementary data
for all E. coli Transcription factor genes analyzed in this study.