Fig. 4.
QseE autophosphorylation in response to various agonists. (A) Schematic of QseE's orientation in the liposome. (B) QseE phosphorylation in response to nitrogen, iron, Epi, AI-3, AI-2, and fumarate. (C) QseE's response to ammonium sulfate and glutamine. (D) QseE's response to phosphate and sulfate sources. (E) QseE's response to ammonium sources containing phosphate or sulfate counter ions. (F) Transcription of espFu-lacZ in WT and qseE in the absence and presence of phosphate and sulfate. ∗, P < 0.05; ∗∗, P < 0.005.