12085
Using electrophoretic mobility shift analysis we demonstrated that the promoter region spanning base pairs -1 to -275 , which contains several putative binding sites for transcription factors , is bound by nuclear factors Sp1 and IRBP but not by C/EBPs .
 DNA: base pairs -1 to -275; protein: IRBP; protein: nuclear factors; DNA: promoter region; protein: C/EBPs; protein: Sp1; protein: transcription factors
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: base pairs -1 to -275, IRBP, nuclear factors, promoter region, C/EBPs, Sp1, transcription factors 
Answer:
 DNA: base pairs -1 to -275; protein: IRBP; protein: nuclear factors; DNA: promoter region; protein: C/EBPs; protein: Sp1; protein: transcription factors