1146
This requirement has been attributed to the activation of the transcription factor NF-kappa B , which synergizes with the constitutive transcription factor Sp1 to drive the HIV-1 promoter .
 protein: NF-kappa B; protein: Sp1; protein: transcription factor; DNA: HIV-1 promoter; protein: constitutive transcription factor
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: NF-kappa B; protein: Sp1; protein: transcription factor; DNA: HIV-1 promoter; protein: constitutive transcription factor