9483
This conformation requires an unwinding of a portion of the C - terminal helix of the HisKA domain that destroys the inactive state residue contacts and suggests how signal - binding determines the equilibrium between the inactive and active states of histidine kinases .
 Chemical: C; Chemical: histidine
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: C; Chemical: histidine