5058
As the predicted protein is very similar to the yeast transcriptional regulator Rpd3p , these results support a role for histone deacetylase as a key regulator of eukaryotic transcription .
 ( protein: yeast transcriptional regulator, None) , ( protein: Rpd3p, None) , ( protein: histone deacetylase, None) , ( protein: histone, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( protein: yeast transcriptional regulator, None) , ( protein: Rpd3p, None) , ( protein: histone deacetylase, None) , ( protein: histone, None) 