Glucosyltransferases

Details Glucosyltransferases Glucosyltransferases

2005-03-15

2005-03-15

N-Rao, Manjunath (Department: 1652)

Chemistry: molecular biology and microbiology

Enzyme , proenzyme; compositions thereof; process for...

Transferase other than ribonuclease

C435S004000, C435S006120, C435S015000, C435S041000, C435S097000, C435S101000, C435S183000, C435S252300, C435S252900, C435S302100, C536S023200, C536S023700

Reexamination Certificate

active

06867026

ABSTRACT:
The present invention describes a protein having glucosyltransferase activity. This protein is derived from lactobacilli, which are food-grade microorganisms with the Generally Recognized As Safe (GRAS) status. The protein produces a glucan with a unique structure having 4-linked, 6-linked and 4,6-linked anhydroglucose units or in the presence of suitable acceptors, oligosaccharides. According to the invention lactobacilli capable of producing this glucan using the novel glucosyltransferase can be used as a probiotic or symbiotic.

REFERENCES:
patent: WO 9606173 (1996-02-01), None
van Geel-Schutten (c) et al. Appl. Microbiol. Biotechnol., 1998, vol. 50:697-703.*
Ausubel et al. (Short Protocols in Molecular Biology, 1997).*
G.H. van Geel-Schutten et al., Exopolysaccharide Production byLactobacillus reuteri, Involving Sucrase Type of Enzymes,Med. Fac. Landbouww, Univ. Gent, V. 65, no. 3a, 2000, pp. 197-201.
G.H. Van Geel-Schutten et al., “Biochemical and Structural Characterization of the Glucan and Fructan Exopolysaccharides Synthesized by theLactobacillus reuteriWild-Type Strain and by Mutant Strains,”Applied and Environmental Microbiology, V. 65, no. 7, Jul. 1999, pp. 3008-3014.
Vincent Monchois et al., “Cloning and Sequencing of a Gene Coding for a Novel Dextransucrase fromLeuconostoc MesenteroidesNRRL B-1299 Synthesizing Only α (1-6) and α (1-3) Linkages,”Gene(Amsterdam), V. 182, no. 1-2, 1996, pp. 23-32.
Christine L. Simpson et al., “Streptococcus salivariusATCC 25975 Possesses at Least Two Genes Coding for Primer-Independent Glucosyltransferases,”Infection and Immunity, V. 63, no. 2, 1995, pp. 609-621.

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