28040
The tetra - aspartate motif in the trypsinogen activation peptide binds calcium ( KD ~ 1 . 6 mM ) , which stimulates autoactivation .
 Chemical: aspartate; Chemical: calcium
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: aspartate; Chemical: calcium