Glycosyl hydrolase family 9.

N-terminal Early set domain associated with the catalytic domain of cellulase. E or "early" set domains are associated with the catalytic domain of cellulases at the N-terminal end. Cellulases are O-glycosyl hydrolases (GHs) that hydrolyze beta 1-4 glucosidic bonds in cellulose. They are usually categorized into either exoglucanases, which sequentially release terminal sugar units from the cellulose chain, or endoglucanases, which also attack the chain internally. The N-terminal domain of cellulase may be related to the immunoglobulin and/or fibronectin type III superfamilies. These domains are associated with different types of catalytic domains at either the N-terminal or C-terminal end and may be involved in homodimeric/tetrameric/dodecameric interactions. Members of this family include members of the alpha amylase family, sialidase, galactose oxidase, cellulase, cellulose, hyaluronate lyase, chitobiase, and chitinase, among others.

Cellulase N-terminal ig-like domain.

Secretion system C-terminal sorting domain. Species that include Porphyromonas gingivalis, Fibrobacter succinogenes, Flavobacterium johnsoniae, Cytophaga hutchinsonii, Gramella forsetii, Prevotella intermedia, and Salinibacter ruber have on average twenty or more copies of this C-terminal domain, associated with sorting to the outer membrane and covalent modification. This domain targets proteins to type IX secretion systems and is secreted then cleaved off by a C-terminal signal peptidease. Based on similarity to other families it is likely that this domain adopts an immunoglobulin like fold.

endoglucanase

Crystalstructure of metagenome-derived glycoside hydrolase family 9 endoglucanase [uncultured bacterium],3X17_B Crystal structure of metagenome-derived glycoside hydrolase family 9 endoglucanase [uncultured bacterium]

Crystalstructure of GH family 9 endoglucanase J30 [Thermobacillus composti KWC4]

Crystalstructure of Zn-binding triple mutant of GH family 9 endoglucanase J30 [Thermobacillus composti KWC4]

Bacteroidesovatus GH9 Bacova_02649 [Bacteroides ovatus ATCC 8483]

ChainA, CELLULOSE 1,4-BETA-CELLOBIOSIDASE [Acetivibrio thermocellus]

Cellulose 1,4-beta-cellobiosidase OS=Acetivibrio thermocellus (strain ATCC 27405 / DSM 1237 / JCM 9322 / NBRC 103400 / NCIMB 10682 / NRRL B-4536 / VPI 7372) OX=203119 GN=celK PE=3 SV=1

Xyloglucan-specific endo-beta-1,4-glucanase BoGH9A OS=Bacteroides ovatus (strain ATCC 8483 / DSM 1896 / JCM 5824 / BCRC 10623 / CCUG 4943 / NCTC 11153) OX=411476 GN=BACOVA_02649 PE=1 SV=1

Cellulose 1,4-beta-cellobiosidase OS=Acetivibrio thermocellus OX=1515 GN=celK PE=1 SV=1

Cellodextrinase OS=Butyrivibrio fibrisolvens OX=831 GN=ced1 PE=1 SV=1

Endoglucanase A OS=Cellvibrio japonicus (strain Ueda107) OX=498211 GN=celA PE=3 SV=2