5948
Deletion analysis of the ICL1 promoter led to the identification of an upstream activating sequence element , UASICL1 ( 5 ' CATTCATCCG 3 ' ) , necessary and sufficient for conferring carbon source - dependent regulation on a heterologous reporter gene .
 ICL1 promoter
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 ICL1 promoter