Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

The characterization of Mediator12 and 13 as conditional positive gene regulators in Arabidopsis

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Arabidopsis thaliana

PROVIDER: GSE143835 | GEO | 2020/04/29

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Similar Datasets

Mediator12 and 13 act as conditional anti-silencing factors in Arabidopsis

Project description:This SuperSeries is composed of the SubSeries listed below.

2020-12-31 | GSE123563 | GEO

The characterization of Mediator12 and 13 as conditional positive gene regulators in Arabidopsis [RNA-seq]

Project description:Mediator is a multi-protein complex which facilitates the initial steps of gene transcription. Mediator 12 (MED12) and MED13 are components of a module that reversibly associates with the core Mediator complex, and both positively and negatively regulates gene expression. Here, in an Arabidopsis mutant screen for factors required for morc1 de-repressed gene expression, we identified MED12 and MED13 as positive gene regulators, both of which contribute broadly to morc1 de-repressed gene expression. Both MED12 and MED13 are preferentially required for the expression of genes lacking active chromatin marks, a chromatin signature shared with morc1 re-activated loci. We further discovered that MED12 tends to interact with genes that are responsive to environmental stimuli, including light and radiation. We demonstrate that the light-induced transient gene expression depends on MED12, and is accompanied by a concomitant increase in MED12 enrichment during induction. In contrast, the steady-state expression level of these genes showed little dependence on MED12, suggesting that MED12 is primarily required to aid the expression of genes in transition from non-active to active states.

2020-04-29 | GSE143833 | GEO