3890
Several positive clones were isolated , one of which encoded the C - terminal 253 amino acids of a putative RNA helicase , a DEAD box protein designated DDX3 .
 GENE: RNA helicase; GENE: DEAD box protein; GENE: DDX3
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: RNA helicase; GENE: DEAD box protein; GENE: DDX3