[A possible role of a low-molecular-weight peptide from Gloeophyllum trabeum in cellulose degradation].
A low-molecular-weight peptide(named Gt factor) was first isolated and purified from the extracellular culture of a brown-rot fungi Gloeophyllum trabeum. It could produce hydroxyl radical HO. in presence of O2 and Fe3+, might destroy hydrogen bonds of cellulose by HO.-involved oxidative mechanism, which was quite different from hydrolysis mechanism of cellulase in filamentous fungi. Gt factor might attack crystalline region of cellulose, bring about more reducing ends and non-reducing ends exposed, thus making cellulose accessible to further degradation.
Wang
Wei
W
State Key Laboratory of Microbial Technology, Shandong University, Jinan 250100, China.
Gao
Peiji
P
D001487:Basidiomycota / Q000737:chemistry*; D001673:Biodegradation, Environmental; D002482:Cellulose / Q000378:metabolism*; D005656:Fungal Proteins / Q000737:chemistry / Q000302:isolation & purification / Q000378:metabolism*; D006860:Hydrogen Bonding; D017665:Hydroxyl Radical / Q000378:metabolism*; D007501:Iron / Q000378:metabolism; D008970:Molecular Weight; D010084:Oxidation-Reduction; D010455:Peptides / Q000737:chemistry / Q000302:isolation & purification / Q000378:metabolism*
D005656:Fungal Proteins; D010455:Peptides; D017665:Hydroxyl Radical; D002482:Cellulose; D007501:Iron