Power P, et al. (2011) Sub-Telomeric core X and Y' Elements in S.cerevisiae Suppress Extreme Variations in Gene Silencing. PLoS One 6(3):e17523
Abstract: Telomere Position Effect (TPE) is governed by strong repression signals emitted by telomeres via the Sir2/3/4 Histone Deacetylase complex. These signals are then relayed by weak proto-silencers residing in the subtelomeric core X and Y' elements. Subtelomeres also contain Sub-Telomeric Anti-silencing Regions (STARs). In this study we have prepared telomeres built of different combinations of core X, Y' and STARs and have analyzed them in strains lacking Histone-Acetyltransferase genes as well as in cdc6-1 and Deltarif1 strains. We show that core X and Y' dramatically reduce both positive and negative variations in TPE, that are caused by these mutations. We also show that the deletion of Histone-Acetyltransferase genes reduce the silencing activity of an ACS proto-silencer, but also reduce the anti-silencing activity of a STAR. We postulate that core X and Y' act as epigenetic "cushioning" cis-elements.
| Status: Published | Type: Journal Article | PubMed ID: 21437278 |
Topics addressed in this paper
Number of different genes curated to this paper: 64
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| Topics | Genes linked to topics (#1 - 10 ) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| CDC45 | CDC6 | CDC7 | GCN5 | HAT1 | MCM5 | ORC2 | ORC5 | RIF1 | RTT109 | |
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| Topics | Genes linked to topics (#11 - 20 ) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| SAS2 | SAS3 | TEL01L-XC | TEL01R-XC | TEL02L-XC | TEL02L-YP | TEL02R-XC | TEL03L-XC | TEL03R-XC | TEL04L-XC | |
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| Topics | Genes linked to topics (#21 - 30 ) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| TEL04R-XC | TEL04R-YP | TEL05L-XC | TEL05L-YP | TEL05R-XC | TEL05R-YP | TEL06L-XC | TEL06L-YP | TEL06R-XC | TEL07L-XC | |
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| Topics | Genes linked to topics (#31 - 40 ) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| TEL07R-XC | TEL07R-YP | TEL08L-XC | TEL08L-YP | TEL08R-XC | TEL08R-YP | TEL09L-XC | TEL09L-YP | TEL09R-XC | TEL10L-XC | |
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| Topics | Genes linked to topics (#41 - 50 ) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| TEL10L-YP | TEL10R-XC | TEL11L-XC | TEL11R-XC | TEL12L-XC | TEL12L-YP1 | TEL12L-YP2 | TEL12R-XC | TEL12R-YP1 | TEL12R-YP2 | |
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| Topics | Genes linked to topics (#51 - 60 ) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| TEL13L-XC | TEL13L-YP | TEL13R-XC | TEL14L-XC | TEL14L-YP | TEL14R-XC | TEL15L-XC | TEL15R-XC | TEL15R-YP | TEL16L-XC | |
| Additional Literature | | | | | | | | | | |
| Function/Process | | | | | | | | | | |
| Strains/Constructs | | | | | | | | | | |
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| Topics | Genes linked to topics (#61 - 64 ) | |||
|---|---|---|---|---|
| TEL16L-YP | TEL16R-XC | TEL16R-YP | YNG1 | |
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