4421
Characterization of human activating transcription factor 4 , a transcriptional activator that interacts with multiple domains of cAMP - responsive element - binding protein ( CREB ) - binding protein .
 GENE: human activating transcription factor 4; GENE: cAMP - responsive element - binding protein; GENE: CREB
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: human activating transcription factor 4; GENE: cAMP - responsive element - binding protein; GENE: CREB