979
Two mammalian enzymes , the haem - controlled repressor ( HCR ) and the double - stranded RNA - activated inhibitor ( dsI ) , phosphorylate Ser - 51 of the alpha subunit , thereby inhibiting the exchange of bound nucleotides on , and thus the recycling of , eIF - 2 .
 GENE: haem - controlled repressor; GENE: HCR; GENE: double - stranded RNA - activated inhibitor; GENE: dsI; GENE: eIF - 2
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: haem - controlled repressor; GENE: HCR; GENE: double - stranded RNA - activated inhibitor; GENE: dsI; GENE: eIF - 2