21104
Activation by pBQN required reactivity with cysteine residues , but ones that are distinct from those previously reported to be the key targets of electrophiles .
 Chemical: pBQN; 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: pBQN; Chemical: cysteine