Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1102169 | ENA |
REPOSITORIES: ENA
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Project description:Few aerobic hyperthermophiles degrade polysaccharides. Here, we describe the genome-enabled enrichment and optical tweezer-based isolation of an aerobic hyperthermophile, Fervidibacter sacchari, which was originally ascribed to candidate phylum Fervidibacteria. F. sacchari uses polysaccharides and monosaccharides as sole carbon sources from 65-87.5 Celsius and expresses 190 carbohydrate-active enzymes according to RNA-Seq and proteomics, including 31 with unusual glycoside hydrolase 177 or 179 domains.
2023-12-11 | MSV000093641 | MassIVE
Project description:Total protein was isolated from the trachea and midgut of D. melanogaster 3rd instar larvae and analysed by shotgun proteomics in order to identify the putative carbohydrate-active enzymes.
2018-01-11 | MSV000081913 | MassIVE
Project description:Diversity and abundance of carbohydrate active enzymes revealed by metagenomic analyses of solfatara Pisciarelli
| PRJNA481947 | ENA
Project description:Digestive fluids isolated from the foregut (crop) of adult specimens of T. domestica were analysed by shotgun proteomics in order to identify the putative carbohydrate-active enzymes involved in plant cell wall digestion.
2018-01-11 | MSV000081912 | MassIVE
Project description:Degradation of polysaccharides forms an essential arc in the carbon cycle, provides a percentage of our daily caloric intake, and is a major driver in the renewable chemical industry. Microorganisms proficient at degrading insoluble polysaccharides possess large numbers of carbohydrate active enzymes, many of which have been categorized as functionally redundant. Here we present data that suggests that carbohydrate active enzymes that have overlapping enzymatic activities can have unique, non-overlapping biological functions in the cell. Our comprehensive study to understand cellodextrin utilization in the soil saprophyte Cellvibrio japonicus found that only one of four predicted b-glucosidases is required in a physiological context. Gene deletion analysis indicated that only the cel3B gene product is essential for efficient cellodextrin utilization in C. japonicus and is constitutively expressed at high levels. Interestingly, expression of individual b-glucosidases in Escherichia coli K-12 enabled this non-cellulolytic bacterium to be fully capable of using cellobiose as a sole carbon source. Furthermore, enzyme kinetic studies indicated that the Cel3A enzyme is significantly more active than the Cel3B enzyme on the oligosaccharides but not disaccharides. Our approach for parsing related carbohydrate active enzymes to determine actual physiological roles in the cell can be applied to other polysaccharide-degradation systems.
2017-01-01 | GSE90955 | GEO
Project description:We set out to investigate the genetic adaptions of the known marine fungus Paradendryphiella salina CBS112865 to the degradation of brown macro-algae, expecting to find a repertoire of carbohydrate active enzymes highly specialized to the degradation of algal polysaccharides. We performed whole genome, transcriptome sequencing and shotgun proteomic analysis of the secretome of P. salina growing on three species of brown algae and under carbon starvation. The genome comparison to close terrestrial fungal relatives, revealed P. salina to have a similar, but reduced carbohydrate active enzyme (CAZyme) profile, except for the presence of three putative alginate lyase 7 genes, most likely acquired via ancient horizontal gene transfer event from a marine bacterium and a polysaccharide lyase 8 gene with similarity to ascomycete chondroitin AC lyases. The proteomic analysis revealed both PL7 and PL8 enzymes to be highly abundant in the algal fermentations together with enzymes necessary for degradation of laminarin, cellulose, lipids and peptides. Our findings indicate that the base CAZyme repertoire of saprobic and plant pathogenic ascomycetes with the necessary addition of alginate lyases provide the fungi with the enzymatic capabilities to thrive on brown algae polysaccharides and even cope with the algal defense mechanisms.
2019-11-13 | PXD012152 | Pride
Project description:Multi-omics Insights into Carbohydrate-active Enzymes and Fruiting Body Differentiation in Leucopaxillus giganteus (PRJCA047914)
| PRJDB39533 | ENA