7082
To assess TM4 accessibility in an active state of CXCR4 , TM4 cysteine mutants were transposed within the constitutively active mutant N119S ( ( 3 . 35 ) ) .
 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