title: Minor-groove width and accessibility in B-DNA drug and protein complexes.
abstract: A new definition is presented for minor-groove width in double-helical B-DNA structures. This uses interstrand H4' ... H5' rather than P ... P distances. It is shown by examination of various oligonucleotide crystal structures that these H4' ... H5' distances are a sensitive measure of minor-groove drug and protein binding, since these hydrogen atoms are in direct non-bonded contact with such bound ligands.
authors.affiliation: Cancer Research Campaign Biomolecular Structure Unit, Institute of Cancer Research, Sutton, Surrey, UK.
authors.forename: S
authors.initials: S
authors.lastname: Neidle
mesh_terms: D001482:Base Composition; D001483:Base Sequence; D004247:DNA / Q000737:chemistry*; D004268:DNA-Binding Proteins / Q000737:chemistry*; D004133:Diminazene / Q000031:analogs & derivatives* / Q000737:chemistry; D046911:Macromolecular Substances; D008969:Molecular Sequence Data; D009690:Nucleic Acid Conformation; D013329:Structure-Activity Relationship
chemical_list: D004268:DNA-Binding Proteins; D046911:Macromolecular Substances; D004247:DNA; C003915:diminazene aceturate; D004133:Diminazene