Components of Chemotaxis Flashcards
how can bacterial cells responds to extracellular signals
by using 2 component signal transduction systems
What detects an external signal
sensore kinase
how is a response regulator signalled
signal is periplasmic, sensor kinase phosporylates itself then signals a response regulator by phosphorylating it
what is the fn of the phosphorylated response regulator
to mediate the require change in cell
what are phosphorelay systems
other proteins involved in some signal transduction system
What are methyl accepting chemotaxis proteins
integral PM, the periplasmic side briefly binds to an attractant. cytoplasmic side binds to the CheW
fn of CheA
Peripheral Sensor kinase when activated will autophosphorylated and then phosphorylate CheB or Chey
What is CheY’s location and fn
cytoplasmic response regulator. when phosphorylated interacts w/the switch FliM which causes the filament to turn CW
Where is CheZ located and fn
cytoplasmic and dephosphorylates CheY-P
Where is CheR located and fn
cytoplasmic and steadily methylates the MCP
Where is CheB and fn
cytoplasmic. response regulator that when phosphorylated by Che-A-P it demethylates the MCP
