14463
We show that PcaV binds protocatechuate in a 1 : 1 stoichiometry with the highest affinity of any MarR family member .
 Chemical: protocatechuate
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: protocatechuate