Heterochromatin formation in Drosophila requires genome-wide histone deacetylation in cleavage chromatin before mid-blastula transition in early embryogenesis
Heterochromatin formation in Drosophila requires genome-wide histone deacetylation in cleavage chromatin before mid-blastula transition in early embryogenesis
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果蝇异染色质的形成需要在早期胚胎发生的中囊胚转变之前在裂解染色质中进行全基因组组蛋白脱乙酰化
DOI:
10.1007/s00412-020-00732-x
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发表时间:
2020
期刊:
影响因子:
1.6
通讯作者:
Reuter G
中科院分区:
文献类型:
--
作者:
Walther M;Schrahn S;Krauss V;Lein S;Kessler J;Jenuwein T;Reuter G
Su(var)mutations define epigenetic factors controlling heterochromatin formation and gene silencing inDrosophila. Here, we identify SU(VAR)2-1 as a novel chromatin regulator that directs global histone deacetylation during the transition of cleavage chromatin into somatic blastoderm chromatin in early embryogenesis. SU(VAR)2-1 is heterochromatin-associated in blastoderm nuclei but not in later stages of development. In larval polytene chromosomes, SU(VAR)2-1 is a band-specific protein. SU(VAR)2-1 directs global histone deacetylation by recruiting the histone deacetylase RPD3. InSu(var)2-1mutants H3K9, H3K27, H4K8 and H4K16 acetylation shows elevated levels genome-wide and heterochromatin displays aberrant histone hyper-acetylation. Whereas H3K9me2- and HP1a-binding appears unaltered, the heterochromatin-specific H3K9me2S10ph composite mark is impaired in heterochromatic chromocenters of larval salivary polytene chromosomes. SU(VAR)2-1 contains an NRF1/EWG domain and a C2HC zinc-finger motif. Our study identifies SU(VAR)2-1 as a dosage-dependent, heterochromatin-initiating SU(VAR) factor, where the SU(VAR)2-1-mediated control of genome-wide histone deacetylation after cleavage and before mid-blastula transition (pre-MBT) is required to enable heterochromatin formation.
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影响因子:
3.3
作者:
David A. Sinclair;A. Ruddell;J. Brock;N. Clegg;V. Lloyd;T. Grigliatti
通讯作者:
T. Grigliatti
影响因子:
10.5
作者:
Chen, GQ;Fernandez, J;Courey, AJ
通讯作者:
Courey, AJ
影响因子:
1.6
作者:
G. Reuter;W. Werner;H. Hoffmann
通讯作者:
H. Hoffmann
影响因子:
5.3
作者:
Beatty AL;Zhang MH;Ku IA;Na B;Schiller NB;Whooley MA
通讯作者:
Whooley MA
DOI:
10.1007/bf00338393
发表时间:
2004
期刊:
Molecular and General Genetics MGG
影响因子:
--
作者:
J. Szabad;G. Reuter;M. Schröder
通讯作者:
M. Schröder