1603
These observations , together with the occurrence of putative 4 ' - phosphopantetheine - attachment sites and a putative thioesterase site , are discussed with reference to the reaction sequence leading to production of the ACV tripeptide .
 GENE: thioesterase site; GENE: ACV tripeptide
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: thioesterase site, ACV tripeptide 
Answer:
 GENE: thioesterase site; GENE: ACV tripeptide