1637
Regulation of cell-type-specific interleukin-2 receptor alpha-chain gene expression : potential role of physical interactions between Elf-1 , HMG-I(Y) , and NF-kappa B family proteins .
 ( protein: Elf-1, None) , ( protein: interleukin-2 receptor alpha-chain, None) , ( protein: NF-kappa B family proteins, None) , ( protein: HMG-I(Y), 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: Elf-1, None) , ( protein: interleukin-2 receptor alpha-chain, None) , ( protein: NF-kappa B family proteins, None) , ( protein: HMG-I(Y), None) 