Overexpression and characterization of endo-cellulase A10 from Aspergillus nidulans in Pichia pastoris / 生物工程学报
Chinese Journal of Biotechnology
;
(12): 757-765, 2017.
Artículo
en Chino
| WPRIM
| ID: wpr-242232
ABSTRACT
Endo-cellulases are important to efficiently hydrolyze cellulose, and widely used in biotechnology. In this study, we overexpressed and characterized an endo-cellulase from Aspergillus nidulans. This endo-cellulase was successfully overexpressed in flasks and fermentor, and its concentration in fermentor reached 0.89 mg/mL. The optimal pH and temperature of the were 4.0 and 80 ℃ respectively, and it was very stable between pH 2.0 and 12.0. It was thermally stable below 60 ℃, whereas it was inactivated very quickly above 70 ℃. Its CMCase activity could be enhanced by Co²⁺, Mn²⁺ and Fe²⁺, whereas it was inhibited by Pb²⁺, Ni²⁺ and Cu²⁺. Therefore, this endo-cellulase exhibited good pH stability and thermostability below 60 ℃, and has the potential as commercial enzymes.
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Idioma:
Chino
Revista:
Chinese Journal of Biotechnology
Año:
2017
Tipo del documento:
Artículo
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