4715
Expression of MEK1 -interfering mutants inhibited the stimulation of IL-2 promoter -driven transcription and blocked the ability of constitutively active Ras and Raf-1 to costimulate NF-AT activity with a calcium ionophore .
 protein: Ras; protein: MEK1 -interfering mutants; protein: NF-AT; protein: MEK1; DNA: IL-2 promoter; protein: Raf-1; protein: IL-2
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: Ras, MEK1 -interfering mutants, NF-AT, MEK1, IL-2 promoter, Raf-1, IL-2 
Answer:
 protein: Ras; protein: MEK1 -interfering mutants; protein: NF-AT; protein: MEK1; DNA: IL-2 promoter; protein: Raf-1; protein: IL-2