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Molecular and Cellular Biology, November 1999, p. 7816-7827, Vol. 19, No. 11
Molecular Oncology Group,
Received 11 February 1999/Returned for modification 25 March
1999/Accepted 19 July 1999
Histone acetylation plays an important role in regulating chromatin
structure and thus gene expression. Here we describe the functional
characterization of HDAC4, a human histone deacetylase whose C-terminal
part displays significant sequence similarity to the deacetylase domain
of yeast HDA1. HDAC4 is expressed in various adult human tissues, and
its gene is located at chromosome band 2q37. HDAC4 possesses histone
deacetylase activity intrinsic to its C-terminal domain. When
tethered to a promoter, HDAC4 represses transcription through two
independent repression domains, with repression domain 1 consisting of
the N-terminal 208 residues and repression domain 2 containing
the deacetylase domain. Through a small region located at its
N-terminal domain, HDAC4 interacts with the MADS-box transcription
factor MEF2C. Furthermore, HDAC4 and MEF2C individually upregulate but
together downmodulate c-jun promoter activity. These
results suggest that HDAC4 interacts with transcription factors such as
MEF2C to negatively regulate gene expression.
0270-7306/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.
HDAC4, a Human Histone Deacetylase Related to Yeast HDA1, Is
a Transcriptional Corepressor
*
Corresponding author. Mailing address: Molecular
Oncology Group, Royal Victoria Hospital, Room H5-41, McGill University
Health Centre, 687 Pine Ave. West, Montreal, QC H3A 1A1, Canada. Phone: (514) 842-1231, ext. 4490. Fax: (514) 843-1478. E-mail:
yangxj{at}lan1.molonc.mcgill.ca.
Molecular and Cellular Biology, November 1999, p. 7816-7827, Vol. 19, No. 11
0270-7306/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.
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