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Nucleic Acids Research, 1980, Vol. 8, No. 3 529-542
© 1980

Articles

DNA repeat lengths of erythrocyte chromatins differing in content of histones H1 and H51

L.A. Miki and James M. Neelin

Department of Microbiology and Molecular Biology Institute, University of California Ottawa, Ontario, Canada X1S 5B6

Received November 12, 1979.

Among the erythrocytes of chicken, trout, carp, and sucker, the relative proportion of the lysine-rich histone H5 varied from 20 to 0% of the total histones. Following digestion of nuclear chromatin with micrococcal nuclease, each of them displayed a longer DNA repeat length and greater repeat length heterogeneity than found in liver chromatin. Fish erythrocytes possessed similar repeat lengths of 207–209 base pairs which was 10–12 base pairs shorter than in chicken erythrocyte chromatin and approximately 10 base pairs longer than in liver chromatin. No correlation existed between the DNA repeat length or repeat length heterogeneity and the relative proportion of H5.

1This work was supported by grants from the National Research Council of Canada, while some measurements were made in the laboratory of Dr. I. Brown, Scarborough College, University of Toronto by B.L.A.M. whose present address is Division of Biological Sciences, National Research Council of Canada, Ottawa, K1A 0R6.


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