A glucosyltransferase that builds poly(α-1,6-d-glucosyl), that is, polyglucoses, dextrans, or α-glucans, from sucrose, releasing d-fructose residues.
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Their topics include exploring the capacity of halophilic microorganisms to synthesize exopolysaccharides with interesting properties, exopolysaccharide production by thermophilic microorganisms, drug delivery systems based on microbial exopolysaccharides, fructans as natural bioactive cosmeceutical ingredients, the molecular modification of levan and biotechnological applications of its derivatives, and cloning and partially characterizing an extracellular dextransucrase coding region (DSRR-V) from Leuconostoc citreum M-3.
Seo et al., "Glucosylation of the flavonoid, astragalin by Leuconostoc mesenteroides B-512FMCM dextransucrase acceptor reactions and characterization of the products," Enzyme and Microbial Technology, vol.
These bacteria are able to secrete dextransucrase, which synthesizes dextran by transferring glucose residues from sucrose to the reducing tail of growing chains [5].
W confusa Cab3 dextransucrase synthesizes dextran with 97% [alpha] (1 [right arrow] 6) and 3% [alpha] (1 [right arrow] 3) linkages [18], whereas W cibaria CMGDEX3 produces a linear dextran with 3.4% [alpha] (1 [right arrow] 3) branch linkages [1].
"Dextran biosynthesis and dextransucrase production by continuous culture of Leuconostoc mesenteroides." Biotechnol.
Optimization of culture conditions for high-level expression of dextransucrase in Escherichia coli.
Bacteria isolated from kimchi produce beneficial enzymes, such as dextransucrase and alcohol/acetaldehyde dehydrogenase [48].
producing highly active dextransucrase from lactate fermented vegetables," International Journal of Food Microbiology, vol.
Purification and properties of dextransucrase from Streptococcus mutans.
Dextransucrase from Leuconostoc-paramesenteroides was immobilized using different immobilization techniques.
Keywords: Dextransucrase, enzyme immobilization, calcium alginate, Leuconostoc.
A rapid screening procedure; strains produce the high proportion of alternansucrase to dextransucrase and of alternan to dextran either fermentatively by cultivation on sucrose, or enzymatically by using the alternansucrase that results from this invention.