General mechanisms in cell signalling

Question 1

What is the general mechanism in cell signalling

Answer 1

• Signalling molecule comes from extracellular environment
• Signalling molecule will bind to its receptor
• Upon the interaction between the receptor and signalling molecule, the receptor changes
  
  • Changes include changes in conformation or they get phosphorylated etc.
• This leads to the transduction of a signal inside the cell

Question 2

What are example cellular responses that we get from the output of transduction?

Answer 2

• Finally output of transduction is a cellular response which could be:
  
  • Transcriptional repression
  • Transcriptional activation
  • Metabolic response
    
    • Cell behaviour