In vivo assembly of regularly spaced nucleosomes on mouse βmaj-globin DNA cloned in an SV40 recombinant

Abstract
Short-term transformation of HeLa cells with an SV40 recombinant carrying a 7.0-Kb [kilobase] mouse genomic globin DNA was studied. By 48 h after transfection, the donor DNA was present in the cell nucleus at high copy episomal numbers with the globin gene in regularly spaced nucleosomal form and transcribed into 9S poly A+ RNA. These minichromosomes can be isolated in sufficient quantity to allow further biochemical and EM studies.