Homo-oligomerisation and nuclear localisation of mouse histone deacetylase 1

被引:87
作者
Taplick, J
Kurtev, V
Kroboth, K
Posch, M
Lechner, T
Seiser, C [1 ]
机构
[1] Univ Vienna, Inst Med Biochem, Vienna Bioctr, Div Mol Biol, Vienna, Austria
[2] Univ Innsbruck, Sch Med, Inst Microbiol, Innsbruck, Austria
基金
奥地利科学基金会;
关键词
chromatin; histone acetylation; histone deacetylase; nuclear localisation; oligomerisation;
D O I
10.1006/jmbi.2001.4569
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Reversible histone acetylation changes the chromatin structure and can modulate gene transcription. Mammalian histone deacetylase 1 (HDAC1) is a nuclear protein that belongs to a growing family of evolutionarily conserved enzymes catalysing the removal of acetyl residues from core histones and other proteins. Previously, we have identified murine HDAC1 as a growth factor-inducible protein in murine T-cells. Here, we characterise the molecular function of mouse HDAC1 in more detail. immunoprecipitation experiments with epitope-tagged HDAC1 protein reveal the association with endogenous HDAC1 enzyme. We show that HDAC1 can homo-oligomerise and that this interaction is dependent on the N-terminal HDAC association domain of the protein. Furthermore, the same HDAC1 domain is also necessary for in vitro binding of HDAC2 and HDAC3, association with RbAp48 and for catalytic activity of the enzyme. A lysine-rich sequence within the carboxy terminus of HDAC1 is crucial for nuclear localisation of the enzyme. We identify a C-terminal nuclear localisation domain, which is sufficient for the transport of HDAC1 and of reporter fusion proteins into the nucleus. Alternatively, HDAC1 can be shuttled into the nucleus by association with another HDAC1 molecule via its N-terminal HDAC association domain. Our results define two domains, which are essential for the oligomerisation and nuclear localisation of mouse HDAC1. (C) 2001 Academic Press.
引用
收藏
页码:27 / 38
页数:12
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