8201
In this study , we undertook the characterization of the catalytic and structural properties of MhpEF from Escherichia coli , an ortholog of DmpFG in which MhpF converts acetaldehyde , produced by the cleavage of 4 - hydroxy - 2 - ketovalerate by MhpE , into acetyl - CoA .
 Chemical: acetaldehyde; Chemical: 4 - hydroxy - 2 - ketovalerate; Chemical: acetyl - CoA
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: acetaldehyde; Chemical: 4 - hydroxy - 2 - ketovalerate; Chemical: acetyl - CoA