18438
Calculations show that a carbamic group bound to Ser241 prevents efficient stabilization of transition states of hydrolysis , leading to large increments in the activation barrier .
 Chemical: carbamic; Chemical: Ser241
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: carbamic; Chemical: Ser241