13813
An earlier study showed that CRBN negatively regulates the functional activity of AMP - activated protein kinase ( AMPK ) in vitro by binding directly to the alpha 1 subunit of the AMPK complex .
 Chemical: AMP
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: AMP