1520
As this phosphorylation was independent of protein kinase C activity , we tested whether a calcium/calmodulin-dependent protein kinase ( CaM kinase ) might phosphorylate the Ets-1 protein after elevation of intracellular free calcium concentrations .
 protein: CaM kinase; protein: protein kinase C; protein: calcium/calmodulin-dependent protein kinase; protein: Ets-1; protein: Ets-1 protein
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 protein: CaM kinase; protein: protein kinase C; protein: calcium/calmodulin-dependent protein kinase; protein: Ets-1; protein: Ets-1 protein