21618
Transient - state kinetics showed that the tyrosine / VA adduct strongly promotes ( > 100 - fold ) substrate oxidation by compound II , the rate - limiting step in catalysis .
 Chemical: tyrosine
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: tyrosine