title: Comparison of foldback sequences of herpes simplex virus types 1 and 2 DNA.
abstract: The DNAs of herpes simplex virus types 1 and 2 (HSV-1 and HSV-2) were separately denatured and allowed to renature briefly. The intrastand foldback structures that resulted from base pairing of inverted repeated sequences on otherwise single-stranded (ss) DNA were visualized in the electron microscope. The two genomes were found to contain similar size classes of small duplex stem DNA sequences. However, HSV-2 DNA appeared to possess an additional, larger size class of foldback structures not found on HSV-1 DNA. Both HSV DNAs were found to contain stem-plus-loop structures; the larger stem-plus-loop structures of the two genomes had similar stem lengths but dissimilar loop lengths. Thus, a comparison of the genomes of HSV-1 and HSV-2 showed that they possessed similar size classes of foldback sequences.
mesh_terms: D001483:Base Sequence; D004279:DNA, Viral; D008854:Microscopy, Electron; D009690:Nucleic Acid Conformation; D009691:Nucleic Acid Denaturation; D009695:Nucleic Acid Renaturation; D018139:Simplexvirus / Q000032:analysis*
chemical_list: D004279:DNA, Viral