Abstract
Digestion of H1-depleted chromatin with micrococcal nuclease at an ionic strength of 0.35M gives rise to structural rearrangements indicating nucleosomal sliding. The ionic strength necessary to reveal this effect is significantly lower than that required in the absence of an accompanying digestion. As an explanation, a model is presented in which the progressing terminal degradation of oligomeric nucleosomes is made responsible for promoting structural rearrangements.
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- Beard P. Mobility of histones on the chromosome of simian virus 40. Cell. 1978 Nov;15(3):955–967. doi: 10.1016/0092-8674(78)90279-9. [DOI] [PubMed] [Google Scholar]
- Britten R. J., Graham D. E., Neufeld B. R. Analysis of repeating DNA sequences by reassociation. Methods Enzymol. 1974;29:363–418. doi: 10.1016/0076-6879(74)29033-5. [DOI] [PubMed] [Google Scholar]
- Clark R. J., Felsenfeld G. Structure of chromatin. Nat New Biol. 1971 Jan 27;229(4):101–106. doi: 10.1038/newbio229101a0. [DOI] [PubMed] [Google Scholar]
- Finch J. T., Klug A. X-ray and electron microscope analyses of crystals of nucleosome cores. Cold Spring Harb Symp Quant Biol. 1978;42(Pt 1):1–9. doi: 10.1101/sqb.1978.042.01.003. [DOI] [PubMed] [Google Scholar]
- Germond J. E., Bellard M., Oudet P., Chambon P. Stability of nucleosomes in native and reconstituted chromatins. Nucleic Acids Res. 1976 Nov;3(11):3173–3192. doi: 10.1093/nar/3.11.3173. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Lawson G. M., Cole R. D. Selective displacement of histone H1 from whole HeLa nuclei: effect on chromatin structure in situ as probed by micrococcal nuclease. Biochemistry. 1979 May 29;18(11):2160–2166. doi: 10.1021/bi00578a005. [DOI] [PubMed] [Google Scholar]
- Loening U. E. The fractionation of high-molecular-weight ribonucleic acid by polyacrylamide-gel electrophoresis. Biochem J. 1967 Jan;102(1):251–257. doi: 10.1042/bj1020251. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Lohr D., Kovacic R. T., Van Holde K. E. Quantitative analysis of the digestion of yeast chromatin by staphylococcal nuclease. Biochemistry. 1977 Feb 8;16(3):463–471. doi: 10.1021/bi00622a020. [DOI] [PubMed] [Google Scholar]
- Lutter L. C. Precise location of DNase I cutting sites in the nucleosome core determined by high resolution gel electrophoresis. Nucleic Acids Res. 1979 Jan;6(1):41–56. doi: 10.1093/nar/6.1.41. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Mirzabekov A. D., Shick V. V., Belyavsky A. V., Bavykin S. G. Primary organization of nucleosome core particle of chromatin: sequence of histone arrangement along DNA. Proc Natl Acad Sci U S A. 1978 Sep;75(9):4184–4188. doi: 10.1073/pnas.75.9.4184. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Noll M., Kornberg R. D. Action of micrococcal nuclease on chromatin and the location of histone H1. J Mol Biol. 1977 Jan 25;109(3):393–404. doi: 10.1016/s0022-2836(77)80019-3. [DOI] [PubMed] [Google Scholar]
- Spadafora C., Oudet P., Chambon P. Rearrangement of chromatin structure induced by increasing ionic strength and temperature. Eur J Biochem. 1979 Oct;100(1):225–235. doi: 10.1111/j.1432-1033.1979.tb02053.x. [DOI] [PubMed] [Google Scholar]
- Steinmetz M., Streeck R. E., Zachau H. G. Closely spaced nucleosome cores in reconstituted histone.DNA complexes and histone-H1-depleted chromatin. Eur J Biochem. 1978 Feb;83(2):615–628. doi: 10.1111/j.1432-1033.1978.tb12131.x. [DOI] [PubMed] [Google Scholar]
- Tatchell K., Van Holde K. E. Compact oligomers and nucleosome phasing. Proc Natl Acad Sci U S A. 1978 Aug;75(8):3583–3587. doi: 10.1073/pnas.75.8.3583. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Tatchell K., Van Holde K. E. Nucleosome reconstitution: effect of DNA length on nuclesome structure. Biochemistry. 1979 Jun 26;18(13):2871–2880. doi: 10.1021/bi00580a031. [DOI] [PubMed] [Google Scholar]
- Weischet W. O., Allen J. R., Riedel G., Van Holde K. E. The effects of salt concentration and H-1 depletion on the digestion of calf thymus chromatin by micrococcal nuclease. Nucleic Acids Res. 1979;6(5):1843–1862. doi: 10.1093/nar/6.5.1843. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Weischet W. O. On the de novo formation of compact oligonucleosomes at high ionic strength. Evidence for nucleosomal sliding in high salt. Nucleic Acids Res. 1979 Sep 25;7(2):291–304. doi: 10.1093/nar/7.2.291. [DOI] [PMC free article] [PubMed] [Google Scholar]


