Adsorption Characteristics of Cellulases from a Constitutive of Trichoderma reesei Mutant
نویسندگان
چکیده
The adsorption parameter, A,, (maximum protein adsorbed/g substrate) and KA (adsorption equilibrium constant) of Trichoderma reesei C-5 cellulases were 58.8 mg protein/g cellulose and 11.6 x 104 Z/m01 respectively. The activation energies for the adsorption rate constants of cellobiobydrolases and endoglucanases of C-5 were 30% and 11% lower respectively than that in the parent T. reesei QM9414 enzymes indicating the greater binding ability of the former. This was also reflected in its increased saccharification efficiency.
منابع مشابه
Monitoring Cellulase Protein Adsorption and Recovery Using SDS-PAGE
Sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) was employed to study the sorption behaviors of cellulases on microcrystalline celluloses and hardwood pulp. The adsorption and recovery of cellulases from Aspergillus niger and Trichoderma reesei were investigated at 25 °C. Cellulase recovery was conducted by rinsing adsorbed enzymes with sodium acetate buffer, Milli-Q water,...
متن کاملComparison of biochemical properties of recombinant endoglucanase II of Trichoderma reesei in methylotrophic yeasts, Pichia pastoris and Hansenula polymorpha
Bioconversion of cellulosic material into bioethanol needs cellulase complex enzymesthat contain endoglucanase, exoglucanase and beta glucosidase. One of the most important organisms that produce cellulases is the filamentous fungi, Trichoderma reesei which able to secrete large amounts of different cellulases. These enzymes are probably the most widely used cellulases industrially, however, th...
متن کاملEnzymatic Hydrolysis of Cellulose from Steam- Pretreated Lespedeza Stalk (lespedeza Crytobotrya) with Four Trichoderma Cellulases
The hydrolytic potential of cellulases produced by Trichoderma viride, Trichoderma pseudokoningii, Trichoderma koningii, and Trichoderma reesei with addition of exogenous β-glucosidase was evaluated on cellulose of steam-pretreated Lespedeza. The T. viride enzyme achieved the highest glucose conversion (90.09%), while T. pseudokoningii cellulase achieved the highest ratio of cellobiose to gluco...
متن کاملFunctional characterization of the native swollenin from Trichoderma reesei: study of its possible role as C1 factor of enzymatic lignocellulose conversion
BACKGROUND Through binding to cellulose, expansin-like proteins are thought to loosen the structural order of crystalline surface material, thus making it more accessible for degradation by hydrolytic enzymes. Swollenin SWO1 is the major expansin-like protein from the fungus Trichoderma reesei. Here, we have performed a detailed characterization of a recombinant native form of SWO1 with respect...
متن کاملQuantitative secretomic analysis of Trichoderma reesei strains reveals enzymatic composition for lignocellulosic biomass degradation.
Trichoderma reesei is a mesophilic, filamentous fungus, and it is a major industrial source of cellulases, but its lignocellulolytic protein expressions on lignocellulosic biomass are poorly explored at present. The extracellular proteins secreted by T. reesei QM6a wild-type and hypercellulolytic mutant Rut C30 grown on natural lignocellulosic biomasses were explored using a quantitative proteo...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2003