tokens: The molecular mass of these factors is approximately 28 kDa , and their DNA binding characteristics are indistinguishable from those of the novel nuclear factor MS-2 .
folded_tokens: the molecular mass of these factors is approximately 28 kda , and their dna binding characteristics are indistinguishable from those of the novel nuclear factor ms-2 .
labels: O B-other_name I-other_name O O O O O B-other_name I-other_name O O O O O O O O O O O O O B-protein_family_or_group I-protein_family_or_group B-protein_molecule O