Structural highlights
Function
NTRB_ECOLI NtrB acts as a signal transducer which responds to the nitrogen level of cell and modulates the activity of NtrC. In nitrogen limitation NtrB activates NtrC by phosphorylating it, while in nitrogen excess NtrC is dephosphorylated and consequently inactivated by NtrB.
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.