19003
Competitive inhibition by an isosteric UbcH7C86S - ubiquitin oxyester substrate analog ( Ki = 64 +/- 18 nm ) demonstrates that Km reflects intrinsic substrate affinity .
 Chemical: oxyester
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: oxyester 
Answer:
 Chemical: oxyester