Domain

Cellulose-binding domain, fungal (IPR000254)

Short name: Cellulose-bd_dom_fun

Domain relationships

None.

Description

The microbial degradation of cellulose and xylans requires several types of enzymes such as endoglucanases (EC:3.2.1.4), cellobiohydrolases (EC:3.2.1.91) (exoglucanases), or xylanases (EC:3.2.1.8) [PMID: 1886523]. Structurally, cellulases and xylanases generally consist of a catalytic domain joined to a cellulose-binding domain (CBD) by a short linker sequence rich in proline and/or hydroxy-amino acids. The CBD of a number of fungal cellulases has been shown to consist of 36 amino acid residues, and it is found either at the N-terminal or at the C-terminal extremity of the enzymes. As it is shown in the following schematic representation, there are four conserved cysteines in this type of CBD domain, all involved in disulphide bonds.

                         +----------------+
                         |          +-----|---------+
                         |          |     |         |
                  xxxxxxxCxxxxxxxxxxCxxxxxCxxxxxxxxxCx

GO terms

Biological Process

GO:0005975 carbohydrate metabolic process

Molecular Function

GO:0030248 cellulose binding
GO:0004553 hydrolase activity, hydrolyzing O-glycosyl compounds

Cellular Component

GO:0005576 extracellular region

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.
ProDom
SMART
PROSITE profiles
Pfam
SUPERFAMILY
PROSITE patterns