Fig. 1. The nitrogen-PTS of E. coli (modified from Jahn et al., 2013).
The nitrogen-phosphate transport system consists of EI
Ntr (
ptsP), NPr (
ptsO), and EIIA
Ntr (
ptsN). The
ptsN and
ptsO genes are found in the same operon with the
rpoN gene encoding σ
54. PTS
Ntr regulates various physiological activities of cells through a series of phosphorylation cascade systems in the direction of PEP → EI
Ntr → NPr → EIIA
Ntr.
© 2022 Korean J. Microbiol.