1514
Recent studies have demonstrated that the U1 snRNP is recruited to the 5 ' splice site by protein / protein interactions involving the SR domains of the U1 - 70K protein and SF2 / ASF .
 GENE: U1 snRNP; GENE: SR; GENE: U1 - 70K protein; GENE: SF2; GENE: ASF
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: U1 snRNP; GENE: SR; GENE: U1 - 70K protein; GENE: SF2; GENE: ASF