14303
Polycomb repressive complex 1 ( PRC1 ) catalyzes lysine 119 monoubiquitylation on H2A ( H2AK119ub1 ) and regulates pluripotency in embryonic stem cells ( ESCs ) .
 Chemical: lysine
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: lysine