4877
In addition , while GCN1 is required in vivo for phosphorylation of eIF - 2 alpha by GCN2 , cell extracts from gcn1 delta strains contained wild - type levels of GCN2 eIF - 2 alpha - kinase activity .
 GENE: GCN1; GENE: eIF - 2 alpha; GENE: GCN2; GENE: gcn1 delta; GENE: GCN2; GENE: eIF - 2 alpha
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: GCN1; GENE: eIF - 2 alpha; GENE: GCN2; GENE: gcn1 delta; GENE: GCN2; GENE: eIF - 2 alpha