8410
We hypothesized that activation of the protein kinase A signaling pathway may inhibit NF-kappaB -mediated transcription by phosphorylating proteins, such as cAMP response element-binding protein ( CREB ), which compete for limiting amounts of the coactivator CBP .
 protein: protein kinase A; protein: NF-kappaB; protein: cAMP response element-binding protein; protein: CBP; protein: CREB
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: protein kinase A, NF-kappaB, cAMP response element-binding protein, CBP, CREB 
Answer:
 protein: protein kinase A; protein: NF-kappaB; protein: cAMP response element-binding protein; protein: CBP; protein: CREB