Nucleosome structure, DNA folding, and gene activity

R. D. Camerini-Otero, B. Sollner-Webb, R. H. Simon, P. Williamson, M. Zasloff, G. Felsenfeld

Research output: Contribution to journalArticle

Abstract

Results obtained in a number of laboratories strongly suggest that the globin genes of avian reticulocytes are complexed with histones. The authors do not yet know whether the complement of histones, their extent of modification, or their detailed conformation is different from normal in the neighborhood of an actively transcribed gene, but, in any case, it appears that the transcription mechanism must contend with a nucleohistone complex. That the nucleosome need not be an insurmountable obstacle to polymerase is demonstrated by their transcription studies. The data show that, under suitable conditions, E. coli RNA polymerase is not greatly inhibited with respect to rate of propagation by the presence of the four core histones on the DNA. If the nucleosome were a static structure, it would be difficult to understand how the polymerase could maneuver past it. It seems likely, however, that the nucleosome is in some sense labile; it may undergo exchange to other DNA binding sites, it may slide, or it may open up to permit the function of the polymerase. Further investigation of the roles of the various histones in the folding of the nucleosome, of the energies involved in such conformational changes, and of the role of histone modification in altering these energies may help us the understand the biological behavior of the nucleosome in terms of its chemistry.

Original languageEnglish (US)
Pages (from-to)57-75
Number of pages19
JournalCold Spring Harbor Symposia on Quantitative Biology
Volume42
Issue number1
StatePublished - 1977
Externally publishedYes

Fingerprint

nucleosomes
Nucleosomes
histones
Histones
Genes
DNA
Transcription
genes
Histone Code
transcription (genetics)
reticulocytes
Globins
Reticulocytes
energy
DNA-Directed RNA Polymerases
DNA-directed RNA polymerase
Escherichia coli
Conformations
binding sites
complement

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Molecular Biology
  • Biochemistry, Genetics and Molecular Biology(all)
  • Biochemistry

Cite this

Camerini-Otero, R. D., Sollner-Webb, B., Simon, R. H., Williamson, P., Zasloff, M., & Felsenfeld, G. (1977). Nucleosome structure, DNA folding, and gene activity. Cold Spring Harbor Symposia on Quantitative Biology, 42(1), 57-75.

Nucleosome structure, DNA folding, and gene activity. / Camerini-Otero, R. D.; Sollner-Webb, B.; Simon, R. H.; Williamson, P.; Zasloff, M.; Felsenfeld, G.

In: Cold Spring Harbor Symposia on Quantitative Biology, Vol. 42, No. 1, 1977, p. 57-75.

Research output: Contribution to journalArticle

Camerini-Otero, RD, Sollner-Webb, B, Simon, RH, Williamson, P, Zasloff, M & Felsenfeld, G 1977, 'Nucleosome structure, DNA folding, and gene activity', Cold Spring Harbor Symposia on Quantitative Biology, vol. 42, no. 1, pp. 57-75.
Camerini-Otero RD, Sollner-Webb B, Simon RH, Williamson P, Zasloff M, Felsenfeld G. Nucleosome structure, DNA folding, and gene activity. Cold Spring Harbor Symposia on Quantitative Biology. 1977;42(1):57-75.
Camerini-Otero, R. D. ; Sollner-Webb, B. ; Simon, R. H. ; Williamson, P. ; Zasloff, M. ; Felsenfeld, G. / Nucleosome structure, DNA folding, and gene activity. In: Cold Spring Harbor Symposia on Quantitative Biology. 1977 ; Vol. 42, No. 1. pp. 57-75.
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