The AcsD subunit, a product of acsD comprising the cellulose
synthase operon of G. xylinus ATCC 53582, is reportedly involved
in cellulose crystallization, as the acsD mutant reduced the
amounts of two cellulose allomorphs (cellulose I and cellulose II)
(11). Wild-type bcsD is a homolog of acsD of G. xylinus ATCC
53582 (11, 23). Cellulose productivity in the N-terminal deletion
mutant of bcsD also decreased, although cellulose crystallization
produced by the mutant was not investigated (39). These observations
suggested that CMCax worked together with BcsD in cellulose
crystallization in the wild-type strain.