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Cellulose and chitin are two of the most abundant biopolymers in nature, but they cannot be effectively utilized in industry due to their recalcitrance. This limitation was overcome by the advent of lytic polysaccharide monooxygenases (LPMOs), which promote the disruption of biopolymers through oxidative mechanism and provide a breakthrough in the action of hydrolytic enzymes. In the application of LPMOs to biomass degradation, the key to consistent and effective functioning lies in their stability. The efficient transformation of biomass resources using LPMOs depends on factors that interfere with their stability. This review discussed three aspects that affect LPMO stability: general external factors, structural factors, and factors in the enzyme-substrate reaction. It explains how these factors impact LPMO stability, discusses the resulting effects, and finally presents relevant measures and considerations, including potential resolutions. The review also provides suggestions for the application of LPMOs in polysaccharide degradation.
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http://dx.doi.org/10.1016/j.biotechadv.2023.108216 | DOI Listing |
Curr Genet
September 2025
Fermentation and Microbial Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu-Tawi, 180001, India.
Trichoderma species exhibit remarkable versatility in adaptability and in occupying habitats with lifestyles ranging from mycoparasitism and saprotrophy to endophytism. In this study, we present the first high-quality whole-genome assembly and annotation of T. lixii using Illumina HiSeq technology to explore the mechanisms of endophytic lifestyle and plant colonization.
View Article and Find Full Text PDFAppl Environ Microbiol
September 2025
Department of Biological Sciences, University of Maryland - Baltimore County, Baltimore, Maryland, USA.
Unlabelled: Microbial deconstruction of plant polysaccharides is important for environmental nutrient cycling, and bacteria proficient at this process have extensive suites of polysaccharide-specific enzymes. In the gram-negative saprophyte , genome annotation suggests that 17 genes are predicted to encode Carbohydrate-Active enZymes (CAZymes) with roles in cellulose degradation; however, previous work suggested that only a subset of these genes is essential. Building upon that work, here, we identify the required and minimally sufficient set of enzymes for complete degradation of cellulose using a combination of transcriptomics, gene deletion analysis, heterologous expression studies, and metabolite analysis.
View Article and Find Full Text PDFFoods
August 2025
College of Food Science, Southwest University, Chongqing 400715, China.
Lytic polysaccharide monooxygenases (LPMOs) represent copper-dependent enzymes pivotal in breaking down resilient polysaccharides like cellulose and chitin by means of oxidation, creating more accessible sites for glycoside hydrolases. To elevate the conversion efficiency of chitin, an AA10 LPMO was identified from the genome of 2-40 and heterologously expressed. The optimal pH for the activity of recombinant LPMO10A is 9.
View Article and Find Full Text PDFPLoS Pathog
August 2025
Karlsruhe Institute of Technology, Karlsruhe, Germany.
The first physical barrier pathogenic microbes need to overcome for host colonization is the cuticle, epidermis, or skin of an animal. The nematode-trapping fungus Arthrobotrys flagrans is able to catch and digest nematodes like Caenorhabditis elegans by overcoming this physical barrier of the nematode and colonize the entire body. Here we characterized TrsA (trap-specific protein), a virulence factor of A.
View Article and Find Full Text PDFAcc Chem Res
August 2025
Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States.
ConspectusCu-dependent metalloenzymes catalyze a wide array of oxidative transformations using O as an oxidant under mild conditions. These include the hydroxylation of challenging organic substrates (e.g.
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