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.

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.

Glucan_BSP_MdoH catalyzes the elongation of beta-1,2 polyglucose chains of glucan. Periplasmic Glucan Biosynthesis protein MdoH is a glucosyltransferase that catalyzes the elongation of beta-1,2 polyglucose chains of glucan, requiring a beta-glucoside as a primer and UDP-glucose as a substrate. Glucans are composed of 5 to 10 units of glucose forming a highly branched structure, where beta-1,2-linked glucose constitutes a linear backbone to which branches are attached by beta-1,6 linkages. In Escherichia coli, glucans are located in the periplasmic space, functioning as regulator of osmolarity. It is synthesized at a maximum when cells are grown in a medium with low osmolarity. It has been shown to span the cytoplasmic membrane.

Putative carbohydrate binding domain.

Glycosyltransferase, catalytic subunit of cellulose synthase and poly-beta-1,6-N-acetylglucosamine synthase [Cell motility].

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