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 .
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 .
O O O O O O O O O O O O B-protein_substructure I-protein_substructure I-protein_substructure O B-protein_substructure O O O B-protein_family_or_group I-protein_family_or_group O O B-protein_family_or_group I-protein_family_or_group O O O B-protein_subunit I-protein_subunit I-protein_subunit I-protein_subunit I-protein_subunit I-protein_subunit O