7079
We successively substituted each residue from E179 ( ( 4 . 68 ) ) to K154 ( ( 4 . 43 ) ) with cysteine and expressed the mutants in COS - 7 cells .
 Chemical: cysteine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: cysteine