title: A possible solution to the problem of unwinding deoxyribonucleic acid, requiring that deoxyribonucleic acid is four-stranded in chromatin.
mesh_terms: D002843:Chromatin / Q000648:ultrastructure*; D004247:DNA; D008956:Models, Chemical; D009690:Nucleic Acid Conformation
chemical_list: D002843:Chromatin; D004247:DNA