10609
Sulfhydryl titration with iodoacetamide , monitored by quantitating the residual thiols after reaction with a maleimide derivative of biotin , revealed a striking difference in the apparent pK ( a ) values of the cysteines at the two splice junctions .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities:  
Answer:
 None