13393
NMR and functional data indicate that activation requires an N - terminal interaction between the transmembrane helices , which promotes an antiparallel interaction between juxtamembrane segments and release of inhibition by the membrane .
 Chemical: N
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: N