Lignocellulose Degradation
Lignocellulose Degradation - Related Videos
10:42
Pretreatment of Lignocellulosic Biomass with Low-cost Ionic Liquids
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Cited by 65 •
2016
The pretreatment of lignocellulosic biomass with protic low-cost ionic liquids is shown, resulting in a delignified cellulose-rich pulp and a purified lignin. The pulp gives rise to high glucose yields after enzymatic saccharification.
02:58
Regulated Protein Degradation
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2020
It is vital to regulate the activity of enzymatic as well as non-enzymatic proteins inside the cell. This can be achieved either through creating a balance between their rate of synthesis and degradation or regulating the intrinsic activity of the protein. Both these regulation mechanisms play an essential role in the normal functioning of cells. Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...
02:11
Proteins: From Genes to Degradation
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2020
Within a biological system, the DNA encodes the RNA, and the nucleotide sequence in the RNA further defines the amino acid sequence in the protein. This is referred to as “The Central Dogma of Molecular Biology” - a term coined by Francis Crick. Central dogma is a firm principle in biology that defines the flow of genetic information within any life form. The two fundamental steps in central dogma are - transcription and translation. Transcription is the synthesis of RNA molecules by RNA...
07:43
Assaying Proteasomal Degradation in a Cell-free System in Plants
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Cited by 26 •
2014
Targeted protein degradation represents a major regulatory mechanism for cell function. It occurs via a conserved ubiquitin-proteasome pathway, which attaches polyubiquitin chains to the target protein that then serve as molecular “tags” for the 26S proteasome. Here, we describe a simple and reliable cell-free assay for proteasomal degradation of proteins.
10:56
Assays for the Degradation of Misfolded Proteins in Cells
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Cited by 5 •
2016
This report describes protocols for measuring degradation rates of misfolded proteins by either western blot or fluorescence-based assays. The methods can be applied to analysis of other misfolded proteins and for high throughput screening.
FAQs
Efficient conversion depends on complementary enzyme activities rather than a single catalyst. Cellulases attack cellulose, hemicellulases act on hemicellulose, and lignin-degrading oxidoreductases modify lignin. Because these polymers form a plant-cell-wall matrix, coordinated action can expose additional substrate and release smaller molecules. This principle guides efforts to improve biomass conversion for biological and industrial uses.
Lignin degradation adds a distinct oxidative component to biomass conversion. Lignin-degrading oxidoreductases act on lignin, while cellulases and hemicellulases target the carbohydrate polymers cellulose and hemicellulose. Considering these activities together matters because lignocellulose contains all three major components. This component-specific division of labor helps researchers evaluate which enzymatic functions are needed for a given conversion goal.
Pretreatment is used to increase access to the polymers before biological conversion. Greater accessibility allows secreted cellulases, hemicellulases, and lignin-degrading oxidoreductases to act on their respective substrates more effectively. In experimental and industrial designs, pretreatment therefore functions as an enabling step: it links the physical state of plant biomass with the performance of the enzyme system.
Different fungi and bacteria may contribute complementary enzyme activities, so the composition of a microbial community can shape which plant-cell-wall components are attacked and how completely biomass is converted. This community perspective extends analysis beyond isolated enzymes. In biology, it helps explain decomposition in natural settings, while in biotechnology it supports investigation of microbial combinations that improve conversion.
A general workflow begins with plant biomass selection, followed by pretreatment when greater polymer accessibility is needed. The accessible material can then be exposed to fungi, bacteria, or their secreted enzyme systems, including cellulases, hemicellulases, and lignin-degrading oxidoreductases. The resulting smaller molecules provide an outcome for connecting processing conditions with biomass-conversion performance.
The resulting smaller molecules can support several objectives, including biofuel and biochemical production, animal-feed development, and sustainable-material research. The same underlying conversion is relevant in both biological systems and industrial processing, but the desired outcome differs: ecosystems depend on carbon recycling, whereas engineered applications seek useful products and reduced reliance on fossil-derived resources. This distinction helps define process goals.
In ecosystems, lignocellulose degradation contributes to carbon recycling by making plant-derived material biologically accessible to organisms. Its biological significance therefore extends beyond the activity of individual enzymes: fungi, bacteria, substrates, and microbial communities interact within a larger carbon-flow process. Studying these relationships can clarify decomposition while also informing efforts to convert biomass into useful products.