title: Molecular studies of HHV-6.
abstract: Methods for the purification of enveloped HHV-6 virions and the viral DNA are presented. The viral genome is estimated to be 170,000 base pairs in size and does not appear to contain inversions due to absence of submolar bands by restriction enzyme analyses. The genomes of two independent HHV-6 isolates, HHV-6GS and HHV-6Z29, showed restriction enzyme site pleomorphism. Large scale purification of enveloped HHV-6 was achieved by continuous flow centrifugation utilizing sucrose gradients, DNAse 1 treatment and banding on 10-30% Dextran T10 gradients. The viral proteins were visualized on high resolution two dimensional polyacrylamide gels and the proteins recognized by serum antibody from patient GS were detected by HR2D Western blot analysis and radioimmunoprecipitation assay. The major antigenic proteins were 200, 120, 80, 72, 30 and 19 kDa.
authors.affiliation: Laboratory of Tumor Cell Biology, National Cancer Institute, Bethesda, Maryland 20892.
authors.forename: S F
authors.initials: SF
authors.lastname: Josephs
authors.forename: D V
authors.initials: DV
authors.lastname: Ablashi
authors.forename: S Z
authors.initials: SZ
authors.lastname: Salahuddin
authors.forename: B
authors.initials: B
authors.lastname: Kramarsky
authors.forename: B R
authors.initials: BR
authors.lastname: Franza
authors.forename: P
authors.initials: P
authors.lastname: Pellett
authors.forename: A
authors.initials: A
authors.lastname: Buchbinder
authors.forename: S
authors.initials: S
authors.lastname: Memon
authors.forename: F
authors.initials: F
authors.lastname: Wong-Staal
authors.forename: R C
authors.initials: RC
authors.lastname: Gallo
mesh_terms: D015153:Blotting, Western; D002499:Centrifugation, Density Gradient; D004279:DNA, Viral / Q000032:analysis* / Q000302:isolation & purification; D015245:Deoxyribonuclease BamHI; D015246:Deoxyribonuclease EcoRI; D004587:Electrophoresis, Agar Gel; D006564:Herpesviridae / Q000235:genetics* / Q000648:ultrastructure; D006801:Humans; D008854:Microscopy, Electron; D011233:Precipitin Tests; D014771:Virion / Q000235:genetics / Q000648:ultrastructure
chemical_list: D004279:DNA, Viral; D015245:Deoxyribonuclease BamHI; D015246:Deoxyribonuclease EcoRI