18688
We found that Sirt2 knock down changed expression of 340 genes , which are mainly involved in cellular processes including actin binding , cellular amino acid metabolic process , transmembrane receptor protein serine / threonine kinase signaling , ferrous iron transport , protein transport and localization , cell morphogenesis , and functions associated with endosome membrane and the trans - Golgi network .
 Chemical: amino acid; Chemical: serine; Chemical: threonine; Chemical: ferrous iron
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: amino acid; Chemical: serine; Chemical: threonine; Chemical: ferrous iron