10008
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 .
 Cat - 1, beta - adrenergic receptor kinase, betaARK, GRK - 2, Arf, GAP
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 Cat - 1, beta - adrenergic receptor kinase, betaARK, GRK - 2, Arf, GAP