12239
The first step in the nuclear import process is recognition of a nuclear localization sequence ( NLS ) within the karyophilic protein by a cytoplasmic receptor such as the importin (karyopherin)-alpha subunit .
 ( protein: cytoplasmic receptor, None) , ( protein: karyophilic protein, None) , ( protein: importin (karyopherin)-alpha subunit, None) , ( protein: nuclear localization sequence, None) , ( protein: NLS, 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: cytoplasmic receptor, None) , ( protein: karyophilic protein, None) , ( protein: importin (karyopherin)-alpha subunit, None) , ( protein: nuclear localization sequence, None) , ( protein: NLS, None) 