Fusion protein amino acids 375-770 (C-terminus) of rat GIT1 (also known as G protein-coupled receptor kinase-interactor 1, GRK-interacting protein 1, Cool-associated and tyrosinephosphorylated protein 1 and Cat-1, accession number Q9Z272) Human: 93% identity (372/396 amino acids identical) Mouse: 97% identity (385/396 amino acids identical) ~50% identity with GIT2