2166
The 5 ' - flanking region of the gene , approximately 1 . 1 kbp long , had no known regulatory elements for transcription such as TATA , GC , and CCAAT boxes .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 None