Taken from Boisset, C., Fraschini,
C., Schülein, M., Henrissat, B., and Chanzy, H., “Imaging the enzymatic
digestion of bacterial cellulose ribbons reveals the endo character of
the cellobiohydrolase Cel6A from Humicola insolens and its mode
of synergy with celobiohydrolase Cel7A” Appl. Envr. Microbiol. 66: 1444-1452
(2000)