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To investigate the molecular basis for the critical regulatory interaction between NF-kappa B and I kappa B/MAD-3 , a series of human NF-kappa B p65 mutants was identified that functionally segregated DNA binding, I kappa B -mediated inhibition , and I kappa B -induced nuclear exclusion of this transcription factor .
 protein: human NF-kappa B p65 mutants; protein: I kappa B; protein: NF-kappa B; protein: I kappa B; protein: NF-kappa B p65; protein: transcription factor; protein: I kappa B/MAD-3
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: human NF-kappa B p65 mutants; protein: I kappa B; protein: NF-kappa B; protein: I kappa B; protein: NF-kappa B p65; protein: transcription factor; protein: I kappa B/MAD-3