Known Activities	Modules of approx. 150 residues found in bacterial enzymes. Binding of these modules has been demonstrated with xylan, β-1,3-glucan, β-1,3-1,4-glucan, β-1,6-glucan and amorphous cellulose but not with crystalline cellulose.
3D Structure Status	β-sandwich
Note	Previously known as cellulose-binding domain family IV (CBD IV).
External resources	HOMSTRAD; InterPro; PFAM;
Statistics	GenBank accession (123); Uniprot accession (58); PDB accession (8); 3D entries (4); cryst (1)