Abstract
We have compared the number of copies of sequences complementary to a cloned Xenopus histone H4 coding sequence in the genomes of Xenopus, Triturus and Ambystoma, amphibian species with widely different C-values (3, 23 and 38pg DNA/haploid genome respectively). Quantitative autoradiography indicates that H4 sequence constitute a greater proportion of the genome the larger that genome is. Measurement of the absolute copy-number by reassociation kinetic analysis indicated 47 +/- 10, 636 +/- 21 2685 +/- 349 copies per haploid genome each in Xenopus, Triturus and Ambystoma respectively. Whilst this confirms a trend of increasing copy-number with increasing C-value, the two are not directly proportional and some other factors must contribute to determining the number of copies of these genes.
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- Bachmann K. Feulgen slope determinations of urodele nuclear DNA amounts. Histochemie. 1970;22(4):289–293. doi: 10.1007/BF00277456. [DOI] [PubMed] [Google Scholar]
- Colman A., Byers M. J., Primrose S. B., Lyons A. Rapid purification of plasmid DNAs by hydroxyapatite chromatography. Eur J Biochem. 1978 Nov 2;91(1):303–310. doi: 10.1111/j.1432-1033.1978.tb20966.x. [DOI] [PubMed] [Google Scholar]
- Crawford R. J., Krieg P., Harvey R. P., Hewish D. A., Wells J. R. Histone genes are clustered with a 15-kilobase repeat in the chicken genome. Nature. 1979 May 10;279(5709):132–136. doi: 10.1038/279132a0. [DOI] [PubMed] [Google Scholar]
- Dawid I. B. Deoxyribonucleic acid in amphibian eggs. J Mol Biol. 1965 Jul;12(3):581–599. doi: 10.1016/s0022-2836(65)80313-8. [DOI] [PubMed] [Google Scholar]
- Engel J. D., Dodgson J. B. Histone genes are clustered but not tandemly repeated in the chicken genome. Proc Natl Acad Sci U S A. 1981 May;78(5):2856–2860. doi: 10.1073/pnas.78.5.2856. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Heintz N., Zernik M., Roeder R. G. The structure of the human histone genes: clustered but not tandemly repeated. Cell. 1981 Jun;24(3):661–668. doi: 10.1016/0092-8674(81)90092-1. [DOI] [PubMed] [Google Scholar]
- Jacob E., Malacinski G., Birnstiel M. L. Reiteration frequency of the histone genes in the genome of the amphibian, Xenopus laevis. Eur J Biochem. 1976 Oct 1;69(1):45–54. doi: 10.1111/j.1432-1033.1976.tb10856.x. [DOI] [PubMed] [Google Scholar]
- Jeffreys A. J., Flavell R. A. A physical map of the DNA regions flanking the rabbit beta-globin gene. Cell. 1977 Oct;12(2):429–439. doi: 10.1016/0092-8674(77)90119-2. [DOI] [PubMed] [Google Scholar]
- KIRBY K. S. ISOLATION AND CHARACTERIZATION OF RIBOSOMAL RIBONUCLEIC ACID. Biochem J. 1965 Jul;96:266–269. doi: 10.1042/bj0960266. [DOI] [PMC free article] [PubMed] [Google Scholar]
- McGhee J. D., Felsenfeld G. Nucleosome structure. Annu Rev Biochem. 1980;49:1115–1156. doi: 10.1146/annurev.bi.49.070180.005343. [DOI] [PubMed] [Google Scholar]
- Nakazato H., Edmonds M. The isolation and purification of rapidly labeled polysome-bound ribonucleic acid on polythymidylate cellulose. J Biol Chem. 1972 May 25;247(10):3365–3367. [PubMed] [Google Scholar]
- Rigby P. W., Dieckmann M., Rhodes C., Berg P. Labeling deoxyribonucleic acid to high specific activity in vitro by nick translation with DNA polymerase I. J Mol Biol. 1977 Jun 15;113(1):237–251. doi: 10.1016/0022-2836(77)90052-3. [DOI] [PubMed] [Google Scholar]
- Ruderman J. V., Pardue M. L. Cell-free translation analysis of messenger RNA in echinoderm and amphibian early development. Dev Biol. 1977 Oct 1;60(1):48–68. doi: 10.1016/0012-1606(77)90109-9. [DOI] [PubMed] [Google Scholar]
- Southern E. M. Detection of specific sequences among DNA fragments separated by gel electrophoresis. J Mol Biol. 1975 Nov 5;98(3):503–517. doi: 10.1016/s0022-2836(75)80083-0. [DOI] [PubMed] [Google Scholar]
- Stephenson E. C., Erba H. P., Gall J. G. Histone gene clusters of the newt notophthalmus are separated by long tracts of satellite DNA. Cell. 1981 Jun;24(3):639–647. doi: 10.1016/0092-8674(81)90090-8. [DOI] [PubMed] [Google Scholar]
- Thomas P. S. Hybridization of denatured RNA and small DNA fragments transferred to nitrocellulose. Proc Natl Acad Sci U S A. 1980 Sep;77(9):5201–5205. doi: 10.1073/pnas.77.9.5201. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Truett M. A., Jones R. S., Potter S. S. Unusual structure of the FB family of transposable elements in Drosophila. Cell. 1981 Jun;24(3):753–763. doi: 10.1016/0092-8674(81)90101-x. [DOI] [PubMed] [Google Scholar]
- Woodland H. R. Histone synthesis during the development of Xenopus. FEBS Lett. 1980 Nov 17;121(1):1–10. doi: 10.1016/0014-5793(80)81252-x. [DOI] [PubMed] [Google Scholar]
- van Dongen W., de Laaf L., Zaal R., Moorman A., Destrée O. The organization of the histone genes in the genome of Xenopus laevis. Nucleic Acids Res. 1981 May 25;9(10):2297–2311. doi: 10.1093/nar/9.10.2297. [DOI] [PMC free article] [PubMed] [Google Scholar]