Known Activities	Modules of approx. 130 residues. A module that is conserved in three Cellvibrio xylan-degrading enzymes binds to xylan and the interaction is calcium dependent, while a module from a Cellvibrio mannanase binds to decorated soluble mannans and mannooligosaccharides. A module in a Phanerochaete chrysosporium galactan 1,3-β-galactosidase binds to β-galactan.
Note	Formerly known as X4 modules.
Commercial Enzyme Provider(s)	NZYTech; PROZOMIX;
Statistics	GenBank accession (214); Uniprot accession (98); PDB accession (19); 3D entries (8); cryst (2)