| Literature DB >> 264672 |
R L Jansing, J L Stein, G S Stein.
Abstract
The regulation of histone gene expression was examined after confluent, nondividing WI-38 human diploid fibroblasts were stimulated to proliferate. Histone mRNA sequences were assayed by hybrid formation with an 3H-labeled single-stranded DNA complementary to histone mRNAs. Histone mRNA became associated with polyribosomes concomitant with the activation of DNA synthesis. The ability of chromatin from WI-38 cells to serve as a template for in vitro transcription of histone mRNA sequences parallels the onset of DNA replication. A role for nonhistone chromosomal proteins in the control of histone gene readout is suggested because, when chromatin from confluent WI-38 cells was dissociated and then reconstituted in the presence of S phase nonhistone chromosomal proteins, a 500-fold activation of histone mRNA sequence transcription was observed.Entities:
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Year: 1977 PMID: 264672 PMCID: PMC393220 DOI: 10.1073/pnas.74.1.173
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN: 0027-8424 Impact factor: 11.205