Aspergillus niger β-glucosidase has a cellulase-like tadpole molecular shape: insights into glycoside hydrolase family 3 (gh3) β-glucosidase structure and function

摘要

Background: β-Glucosidase completes cellulose enzymatic hydrolysis by releasing glucose from cellobiose. Results: SAXS experiments revealed that Aspergillus niger β-glucosidase has a cellulase-like tadpole molecular shape, uncommon to enzymes that act on the soluble substrates. Conclusion: We show that AnBgl1 N- and C-terminal domains are linked by a long extended linker. Significance: Understanding AnBgl1 architecture is useful for comprehension of the enzyme-cell wall interaction and the process of biomass saccharification.