1354
Stable association of U2 snRNP with the branchpoint sequence of mammalian pre - mRNAs requires binding of a non - snRNP protein to the polypyrimidine tract .
 GENE: U2 snRNP
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: U2 snRNP 
Answer:
 GENE: U2 snRNP