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Title: Identification of direct target genes of the Neurospora crassa essential plant biomass deconstruction transcription factors CLR-1, CLR-2 and XLR-1 (ChIP-Seq)      
dateReleased:
09-01-2015
description:
abstract: The plant cell wall is composed of many complex polymers, and its deconstruction requires an equally complex orchestration of a wide array of enzymes. In Neurospora crassa, clr-1, clr-2 and xlr-1 have been identified as the key transcription factors involved in cell wall breakdown. In order to define their regulons, we performed ChIPseq upon these three transcription factors. CLR-1, CLR-2 and XLR-1 each bind to the most highly and differentially expressed gene populations, which include the cellulases for the CLRs and the hemicellulases for XLR-1. CLR-1 also bound to its regulon under non-inducing conditions; however, this did not translate into gene expression. Motif analysis of the bound genes revealed conserved DNA binding motifs, with the CLR-2 motif matching that of its closest yeast homolog, GAL4. Co-immunoprecipitation studies were able to show that CLR-1 and CLR-2 act as homodimers. Finally, we report on a conserved XLR-1 point mutation that is sufficient to drive hemicellulase expression under non-inducing conditions. Understanding how these transcription factors work in concert to break down plant biomass can inform decisions on how to best engineer future fungal strains for decreased enzyme costs. RNAseq and ChIPseq upon knockout mutants and sild type growing on various carbon sources to determin the role of the transcription factors: CLR-1, CLR-2, and XLR-1 in plant cell wall degradation
privacy:
not applicable
aggregation:
instance of dataset
ID:
E-GEOD-68516
refinement:
raw
alternateIdentifiers:
68516
keywords:
functional genomics
dateModified:
09-05-2015
availability:
available
types:
gene expression
name:
Neurospora crassa
accessURL: https://www.ebi.ac.uk/arrayexpress/files/E-GEOD-68516/E-GEOD-68516.raw.1.zip
storedIn:
ArrayExpress
qualifier:
gzip compressed
format:
TXT
accessType:
download
authentication:
none
authorization:
none
accessURL: https://www.ebi.ac.uk/arrayexpress/files/E-GEOD-68516/E-GEOD-68516.processed.1.zip
storedIn:
ArrayExpress
qualifier:
gzip compressed
format:
TXT
accessType:
download
authentication:
none
authorization:
none
accessURL: https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE68516
storedIn:
Gene Expression Omnibus
qualifier:
not compressed
format:
HTML
accessType:
landing page
primary:
true
authentication:
none
authorization:
none
abbreviation:
EBI
homePage: http://www.ebi.ac.uk/
ID:
SCR:004727
name:
European Bioinformatics Institute
homePage: https://www.ebi.ac.uk/arrayexpress/
ID:
SCR:002964
name:
ArrayExpress

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