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- W2890967320 abstract "Abstract Understanding the DNA variation in regulation of carbohydrate-active enzymes (CAZymes) is fundamental to the use of wood-decaying basidiomycetes in lignocellulose conversion into renewable energy. Our goal is to identify the regulators of lignocellulolytic enzymes in Coprinopsis cinerea , of which the genome harbors high number of Auxiliary Activities enzymes. The DNA sequence of C. cinerea family including 46 single spore isolates (SSIs) from crosses of two homozygous strains are used to develop a panel of SNP markers. Then the RNA sequence were used to characterize the gene expression profiles. The RNA were extracted from cultures grown on softwood-enriched sawdust to induce lignocellulolytic enzymes and CCR de-repression genes. To assess the genetic contribution to enzyme expression variations among the 46 SSIs, associations between SNPs and gene expressions were examined genome-widely. 5148 local eQTLs and 7738 distant eQTLs were obtained. By analyzing these eQTLs, the potential regulatory factors of the CAZymes expression and the de-repression of Carbon Catabolism Repression (CCR) were identified,. The eQTL network is characterized in terms of hotspots, evolutionary age and post-translational modifications (PTMs). In the eQTL network of C. cinerea , the non-regulatory genes are younger than the regulatory genes. The proteins regulated by combinational multiple types of PTMs are more likely to function as super regulatory hotspots in protein-protein interactions. The evolutionary age analysis and the PTMome analysis could serve as alternative methods to identify master regulators from genomic data. This work demonstrates a comprehensive bioinformatics approach to identify regulatory factors with next-generation sequencing data. The results provide candidate genes for bioengineering to increase the enzyme production, which will practically benefit the bioethanol production from lignocellulose. Significance This eQTL analysis is designed to study the fungal CAZymes and carbon catabolism repression, especially during the mycelium stage. In Coprinopsis cinerea , only the regions near two ends of the chromosomes have high recombination rate, and suitable for family based eQTL analysis. A sugar transporter is a hotspot controlling many CCR genes. CAZymes are not regulated by a master regulator, but by individual regulators. This indicates that CAZymes are under specific regulatory pathways, so can response to specific conditions. In the eQTL network, the rGenes are evolutionarily older, with more types of PTM sites than eGenes. In the eQTL network, the proteins with more types of PTM sites are more likely associated with Information Storage and Processing, and act as super-hub in the network." @default.
- W2890967320 created "2018-09-27" @default.
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- W2890967320 date "2018-09-20" @default.
- W2890967320 modified "2023-09-23" @default.
- W2890967320 title "eQTL network analysis reveals that regulatory genes are evolutionarily older and bearing more types of PTM sites in Coprinopsis cinerea" @default.
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- W2890967320 doi "https://doi.org/10.1101/413062" @default.
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