| When coexpressed in human embryonic kidney 293 cells , PrRP receptor was able to coimmunoprecipitate the three PDZ domain proteins known to interact with AMPA receptors : glutamate receptor interacting protein ( GRIP ) , AMPA binding protein ( ABP ) , and protein that interacts with C kinase ( PICK 1 ) , but not the PDZ domain protein PSD 95 , which does not interact with AMPA receptors . 0.87481914^^^ We found that PrRP receptor interaction with GRIP is not protein kinase C regulated but may be regulated by other unidentified kinase because okadaic acid dramatically reduced GRIP interaction . 0.67001639^^^ |