SUV39h-independent association of HP1b with fibrillarin-positive nucleolar regions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14330%2F10%3A00051235" target="_blank" >RIV/00216224:14330/10:00051235 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.springerlink.com/content/03353h53h300j70k/" target="_blank" >http://www.springerlink.com/content/03353h53h300j70k/</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00412-009-0252-2" target="_blank" >10.1007/s00412-009-0252-2</a>

Jazyk výsledku

angličtina

Název v původním jazyce

SUV39h-independent association of HP1b with fibrillarin-positive nucleolar regions

Popis výsledku v původním jazyce

Heterochromatin protein 1 (HP1), which binds to sites of histone H3 lysine 9 (H3K9) methylation, is primarily responsible for gene silencing and the formation of heterochromatin. We observed that HP1beta is located in both the chromocenters and fibrillarin-positive nucleoli interiors. However, HP1alfa and HP1gamma occupied fibrillarin-positive compartments to a lesser extent, corresponding to the distinct levels of HP1 subtypes at the promoter of rDNA genes. Deficiency of histone methyltransferases SUV39h, and/or inhibition of histone deacetylases (HDACi) decreased HP1beta and H3K9 trimethylation at chromocenters, but not in fibrillarin-positive regions that co-localized with RNA Pol I. Similarly, SUV39h- and HDACi-dependent nucleolar rearrangement andinhibition of rDNA transcription did not affect the association between HP1beta - and fibrillarin. The presence of HP1beta in nucleoli is likely connected with transcription of ribosomal genes and with the role of fibrillarin in nucleola

Název v anglickém jazyce

SUV39h-independent association of HP1b with fibrillarin-positive nucleolar regions

Popis výsledku anglicky

Heterochromatin protein 1 (HP1), which binds to sites of histone H3 lysine 9 (H3K9) methylation, is primarily responsible for gene silencing and the formation of heterochromatin. We observed that HP1beta is located in both the chromocenters and fibrillarin-positive nucleoli interiors. However, HP1alfa and HP1gamma occupied fibrillarin-positive compartments to a lesser extent, corresponding to the distinct levels of HP1 subtypes at the promoter of rDNA genes. Deficiency of histone methyltransferases SUV39h, and/or inhibition of histone deacetylases (HDACi) decreased HP1beta and H3K9 trimethylation at chromocenters, but not in fibrillarin-positive regions that co-localized with RNA Pol I. Similarly, SUV39h- and HDACi-dependent nucleolar rearrangement andinhibition of rDNA transcription did not affect the association between HP1beta - and fibrillarin. The presence of HP1beta in nucleoli is likely connected with transcription of ribosomal genes and with the role of fibrillarin in nucleola

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EB - Genetika a molekulární biologie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2010

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Chromosoma

ISSN

0009-5915

e-ISSN

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Svazek periodika

119

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

15

Strana od-do

227-241

Kód UT WoS článku

000277786400001

EID výsledku v databázi Scopus

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