9390
Histone deacetylases are able to catalyze the hydrolysis of N - acetyl lysine residues of histones which package chromosomal DNA .
 Chemical: N - acetyl lysine
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 - acetyl lysine