Nucleic Acids Research, Vol 25, Issue 24 5003-5009, Copyright © 1997 by Oxford University Press
DT Brown, A Gunjan, BT Alexander and DB Sittman
The in vivo overproduction of two mouse histone H1 variants in homologous
mouse fibroblasts has opposite effects on gene expression. Overproduction
of H1(0) results in repression of transcript levels of all polymerase II
genes tested. In contrast, overproduction of H1c results in elevated levels
of transcripts. We created a series of chimeric H1 genes in which the
regions encoding the three structural domains common to this family of
these proteins were systematically switched. Overexpression of these genes
in vivo resulted in the accumulation of large amounts of the chimeric H1 in
chromatin. Analysis of the effects of overproduction of these proteins
revealed that the differential effect of H1 variant overproduction on gene
expression is due to differences in the central globular domain.
ARTICLES
Differential effect of H1 variant overproduction on gene expression is due to differences in the central globular domain
Department of Biochemistry, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS 39216-4505, USA. dtbrown@fiona.umsmed.edu
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