7118
Our analyses showed that four or three aromatic residues form a similar " aromatic box " in the active site of the AMADH enzymes , being the equivalents to Phe170 and Trp177 ( human ALDH2 numbering ) strictly conserved in all of them , which supports their relevance in binding the aminoaldehyde by cation - pi interactions .
 Chemical: Phe170; Chemical: Trp177; Chemical: aminoaldehyde
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: Phe170; Chemical: Trp177; Chemical: aminoaldehyde