tokens: Cat-1 is identical to the recently identified binding partner for the beta-adrenergic receptor kinase ( betaARK or GRK-2 ) , which was shown to have Arf-GAP activity .
folded_tokens: cat-1 be identical to the recently identify binding partner for the beta-adrenergic receptor kinase ( betaark or grk-2 ) , which be show to have arf-gap activity .