14323
Two papers in this issue of Cell Metabolism reveal that O - GlcNAcylation of clock proteins , which is dependent on nutrients , adjusts our circadian clock ( Kaasik et al . , 2013 ; Li et al . , 2013 ) .
 Chemical: O
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: O