tokens: These results are the first to demonstrate the structural organization of a vertebrate gene encoding an integral membrane protein of the nuclear envelope that may be a member of a family of polypeptides conserved in evolution .
folded_tokens: these results are the first to demonstrate the structural organization of a vertebrate gene encoding an integral membrane protein of the nuclear envelope that may be a member of a family of polypeptides conserved in evolution .
labels: O O O O O O O O O O O O B-DNA_family_or_group I-DNA_family_or_group O O B-protein_family_or_group B-protein_family_or_group I-protein_family_or_group O O B-cell_component I-cell_component O O O O O O O O O B-peptide O O B-other_name O