title: Secretion of ligninperoxidase by Penicillium citrinum, Fusarium oxysporum and Aspergillus terreus.
abstract: Secretion of ligninperoxidase [E.C.1.11.1.7] by Penicillium citrinum, Fusarium oxysporum and Aspergillus terreus in liquid culture growth medium has been demonstrated. Enzymatic characteristics like Km, pH and temperature optima using veratryl alcohol as the organic substrate of ligninperoxidases from above sources have been determined. Km values using veratryl alcohol as substrate for enzymes from P. citrinum, F. oxysporum and A. terreus were 69, 64 and 60 microM respectively. Km values using H2O2 as the variable substrate were 64, 72 and 80 microM. The pH optima were 4.0, 2.3 and 2.0 respectively. The values of temperature optima were 30 degrees, 25 degrees and 22 degrees C for the enzymes from P. citrinum, F. oxysporum and A. terreus respectively.
authors.affiliation: Department of Chemistry, D D U Gorakhpur University, Gorakhpur 273009, India.
authors.forename: Meera
authors.initials: M
authors.lastname: Kumari
authors.forename: R S S
authors.initials: RS
authors.lastname: Yadav
authors.forename: K D S
authors.initials: KD
authors.lastname: Yadav
mesh_terms: D001230:Aspergillus / Q000201:enzymology*; D005670:Fusarium / Q000201:enzymology*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D010407:Penicillium / Q000201:enzymology*; D010544:Peroxidases / Q000378:metabolism*; D013379:Substrate Specificity; D013696:Temperature
chemical_list: D010544:Peroxidases; C042858:lignin peroxidase