tokens: Rex is a phosphoprotein found in the cell nucleolus , whose function may be regulated by its localization and phosphorylation .
folded_tokens: rex is a phosphoprotein found in the cell nucleolus , whose function may be regulated by its localization and phosphorylation .
labels: B-protein_molecule O O B-protein_family_or_group O O O B-cell_component I-cell_component O O O O O O O O B-other_name O B-other_name O