5784
We show that HRI and dsRNA - PK phosphorylate yeast eIF - 2 alpha in vitro and in vivo and functionally substitute for GCN2 protein to stimulate GCN4 translation in yeast .
 HRI, dsRNA - PK, yeast eIF - 2 alpha, GCN2 protein, GCN4
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 HRI, dsRNA - PK, yeast eIF - 2 alpha, GCN2 protein, GCN4