
Physical association of the catalytic and helper modules of a family-9 glycoside hydrolase is essential for activity
Keywords: Cel9I, full-length cellulase 9I from C. thermocellum; GH9, catalytic module (family-9 GH) of Cel9I; CBM3c, family-3c carbohydrate-binding module with intact N-terminal linker; CBM3b, family-3b carbohydrate-binding module with intact N-terminal linker; CBM