2699
GCN4 encodes a transcriptional activator of amino acid biosynthetic genes in Saccharomyces cerevisiae .
 GENE: GCN4
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: GCN4 
Answer:
 GENE: GCN4