Nurturing Life Sciences
#Id: 9752
#Id: 3204
#Unit 3. Fundamental Processes
#Id: 9372
#Unit 4. Cell Communication and Cell Signaling
#Id: 8604
#Unit 2. Cellular Organization
#Id: 8302
#Unit 1. Molecules and their Interaction Relevant to Biology
#Id: 9364
Simultaneously, two serines in each Smad2/3 phosphorylated by RI receptor kinase bind to phosphoserine-binding sites in the MH2 domains of a Smad4