Pathways for extracellular Fenton chemistry in the brown rot basidiomycete Gloeophyllum trabeum

Article Abstract:

Both 2,5-dimethoxy-1,4-benzoquinone and 4,5-dimethoxy-1,2-benzoquinone participate in the extracellular hydroquinone-quinone redox cycle in Gloeophyllum trabeum that reduces Fe(super 3+) and generates hydrogen peroxide. The hydroxyl radical is believed to be one of the oxidants that brown rot fungi use to degrade wood polymers.

Wood-decaying fungi

---

Processive endoglucanase active in crystalline cellulose hydrolysis by the brown rot basidiomycete Gloeophyllum trabeum

Article Abstract:

Gloeophyllum trabeum is grown on microcrystalline cellulose and purified the major glycoslhydrolases it produced. A report that the major extracellular enzyme produced by Gloeophyllum trabeum on this substrate is a processive endoglucanase with Avicelase activity is presented.

United States, Science & research, Analysis, Hydrolysis, Basidiomycota

---

Manganese-dependent cleavage of nonphenolic lignin structures by Ceriporiopsis subvermispora in the absence of lignin peroxidase

Article Abstract:

The mechanism by which the fungus Ceriporiopsis subvermispora degrades the nonphenolic structures in lignin was investigated. During cleavage of these structures, C. subvermispora generated metabolites that target the high-molecular-weight polyethylene-glycol-linked lignin model, which is the major nonphenolic beta-O-4 structure of lignin. Other substances such as manganese peroxidase were also generated. The rate of cleavage increased as the enzyme synthesis increased, suggesting that manganese influences cleavage of nonphenolic lignin structures.

Biodegradation, Lignin

Similar abstracts:

• Abstracts: Establishing biorientation occurs with precocious separation of the sister kinetochores, but not the arms, in the early spindle of budding yeast
• Abstracts: Modification of the signal sequence cleavage site of listeriolysin O does not affect protein secretion but impairs the virulence of Listeria monocytogenes
• Abstracts: Development of antibiotic-overproducing strains by site-directed mutagenesis of the rpsL gene in Streptomyces lividans
• Abstracts: Isoenzyme multiplicity and characterization of recombinant manganese peroxidases from Ceriporiopsis subvermispora and Phanerochaete chrysosporium
• Abstracts: Quantitative detection of the nosZ gene, encoding nitrous oxide reductase, and comparison of the abundances of 16S rRNA, narG, nirK, and nosZ genes in soils

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.