Second GH94N domain of cyclic beta 1-2 glucan synthetase and similar domains. The glycoside hydrolase family 94 (previously known as glycosyltransferase family 36) includes cyclic beta 1-2 glucan synthetase (EC:2.4.1.20) or ChvB (encoded by the chromosomal chvB virulence gene). This second of two tandemly repeated GH94-N-terminal-like domains has not been characterized functionally. Some beta 1-2 glucan synthetases are annotated as NdvB (nodule development B) gene products, glycosyltransferases required for the synthesis of cyclic beta-(1,2)-glucans, which play a role in interactions between bacteria and plants.

Glycosyltransferase family 36. The glycosyltransferase family 36 includes cellobiose phosphorylase (EC:2.4.1.20), cellodextrin phosphorylase (EC:2.4.1.49), chitobiose phosphorylase (EC:2.4.1.-). Many members of this family contain two copies of this domain.

Putative glucoamylase. The structure of UniProt:Q5LIB7 has an alpha/alpha toroid fold and is similar structurally to a number of glucoamylases. Most of these structural homologs are glucoamylases, involved in breaking down complex sugars (e.g. starch). The biologically relevant state is likely to be monomeric. The putative active site is located at the centre of the toroid with a well defined large cavity.

N-terminal domain of glycoside hydrolase family 94 and related domains. The glycoside hydrolase family 94 (previously known as glycosyltransferase family 36) includes cellobiose phosphorylase (EC:2.4.1.20), cellodextrin phosphorylase (EC:2.4.1.49), chitobiose phosphorylase (EC:2.4.1.-), amongst other members. Their N-terminal domain is involved in oligomerization and may play a role in catalysis, but it is separate from the catalytic domain [an (alpha/alpha)(6) barrel]. This GH64N domain also occurs in tandem repeat arrangements (not at the N-terminus) in cyclic beta 1-2 glucan synthetase and related proteins, and as a standalone domain in distantly related proteins of unknown function.

Glycoside hydrolase family 94 N-terminal-like domain of uncharacterized function. The glycoside hydrolase family 94 (previously known as glycosyltransferase family 36) includes cellobiose phosphorylase (EC:2.4.1.20), cellodextrin phosphorylase (EC:2.4.1.49), chitobiose phosphorylase (EC:2.4.1.-), amongst other members. Their N-terminal domain is involved in oligomerization and may play a role in catalysis, but it is separate from the catalytic domain [an (alpha/alpha)(6) barrel]. The GH64N domain, as represented by this model, is found near the N-terminus of GH94 members and related proteins with uncharacterized specificities.

Cyclic beta-(1,2)-glucan synthase NdvB OS=Rhizobium meliloti (strain 1021) OX=266834 GN=ndvB PE=1 SV=2