Nucleolin is an abundant nucleolar protein which is believed to play a role in rDNA transcription or organization , or rRNA processing .
nucleolin is an abundant nucleolar protein which is believed to play a role in rdna transcription or organization , or rrna processing .
B-protein_molecule O O B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group O O O O O O O O B-DNA_family_or_group O O O O O B-RNA_family_or_group O O