4506
The distance between delta nitrogen of His438 to epsilon oxygen of Glu325 and epsilon nitrogen of His438 to gamma oxygen of Ser198 were highly altered in L307P mutant than the wild and other three variants throughout the simulation .
 Chemical: nitrogen; Chemical: His438; Chemical: oxygen; Chemical: Glu325; Chemical: nitrogen; Chemical: His438; Chemical: oxygen; Chemical: Ser198
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: nitrogen; Chemical: His438; Chemical: oxygen; Chemical: Glu325; Chemical: nitrogen; Chemical: His438; Chemical: oxygen; Chemical: Ser198