- Ste3 is the a-factor receptor found on the surface of α-cells. Dohlman and Thorner, 2001 PMID 11395421
Although we are not including Ste3 in our model, if we were to include Ste3 it would participate in the following reactions, in an analogous fashion to Ste2.
Pheromone/Receptor/G protein interactions
G protein nucleotide hydrolysis/exchange
Ste12 mediated protein synthesis
Protein dilution/synthesis due to cell growth
We will not include Ste3 in our model.