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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Nat+Commun
2016 ; 7
(ä): 10393
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Shugoshin forms a specialized chromatin domain at subtelomeres that regulates
transcription and replication timing
#MMPMID26804021
Tashiro S
; Handa T
; Matsuda A
; Ban T
; Takigawa T
; Miyasato K
; Ishii K
; Kugou K
; Ohta K
; Hiraoka Y
; Masukata H
; Kanoh J
Nat Commun
2016[Jan]; 7
(ä): 10393
PMID26804021
show ga
A chromosome is composed of structurally and functionally distinct domains.
However, the molecular mechanisms underlying the formation of chromatin structure
and the function of subtelomeres, the telomere-adjacent regions, remain obscure.
Here we report the roles of the conserved centromeric protein Shugoshin 2 (Sgo2)
in defining chromatin structure and functions of the subtelomeres in the fission
yeast Schizosaccharomyces pombe. We show that Sgo2 localizes at the subtelomeres
preferentially during G2 phase and is essential for the formation of a highly
condensed subtelomeric chromatin body 'knob'. Furthermore, the absence of Sgo2
leads to the derepression of the subtelomeric genes and premature DNA replication
at the subtelomeric late origins. Thus, the subtelomeric specialized chromatin
domain organized by Sgo2 represses both transcription and replication to ensure
proper gene expression and replication timing.