Exo-1,4-beta-D-glucosaminidase (, CsxA, GlcNase, exochitosanase, GlmA, exo-beta-D-glucosaminidase, chitosan exo-1,4-beta-D-glucosaminidase) is an enzyme with systematic name chitosan exo-(1->4)-beta-D-glucosaminidase.! This enzyme catalyses the following chemical reaction
Chitosan is a partially or totally N-deacetylated chitin derivative that is found in the cell walls of some phytopathogenic fungi .