TLS Online TPP Program

#Question id: 40461


In the E. coli chemotaxis pathway, which of the following events directly leads to "tumbling" behavior?

#Applied Microbiology
  1.  Dephosphorylation of CheY by CheZ 
  2.  Binding of phosphorylated CheY (CheY-P) to the FliM switch protein
  3. Methylation of MCPs by CheR
  4. Binding of an attractant to the periplasmic domain of MCPs