5057
Both proteins were identified by peptide microsequencing , and a complementary DNA encoding the histone deacetylase catalytic subunit ( HD1 ) was cloned from a human Jurkat T cell library .
 ( protein: histone deacetylase, None) , ( protein: histone, None) , ( protein: HD1, None) , ( protein: histone deacetylase catalytic subunit, None) , ( DNA: complementary DNA, 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: histone deacetylase, None) , ( protein: histone, None) , ( protein: HD1, None) , ( protein: histone deacetylase catalytic subunit, None) , ( DNA: complementary DNA, None) 