7170
We show here that the acidic sequence of PEP - 19 has intrinsic Ca ( 2 + ) binding activity , which may modulate Ca ( 2 + ) binding to CaM by stabilizing an initial Ca ( 2 + ) - CaM complex or by electrostatically steering Ca ( 2 + ) to and from CaM .
 Chemical: Ca ( 2 + ); Chemical: Ca ( 2 + ); Chemical: Ca ( 2 + ); Chemical: Ca ( 2 + )
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: Ca ( 2 + ); Chemical: Ca ( 2 + ); Chemical: Ca ( 2 + ); Chemical: Ca ( 2 + )