19545
The stimulation by N - terminal pro - sequence removal is due to the cis ( intra - dimer and inter - protomer ) effect of formation of the new N - terminus , whereas that by C - terminal cleavage is due to removal of its trans ( inter - dimer ) inhibitory effect .
 N, C
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 N, C