Chemistry: molecular biology and microbiology – Micro-organism – per se ; compositions thereof; proces of... – Bacteria or actinomycetales; media therefor
Reexamination Certificate
2007-10-23
2007-10-23
Steadman, David J. (Department: 1656)
Chemistry: molecular biology and microbiology
Micro-organism, per se ; compositions thereof; proces of...
Bacteria or actinomycetales; media therefor
C435S325000, C435S419000, C435S254110, C435S320100, C536S023100, C536S023700
Reexamination Certificate
active
09567465
ABSTRACT:
This invention relates to the isolation and characterization of an operon from the organismXylella fastidiosa. This operon, referred to as the XfGUM operon, contains 9 genes, and is involved in the production of a compound with xanthan gum like properties. The expression products of the operon and genes are also a part of the invention, as are various uses of these.
REFERENCES:
patent: 87/05938 (1987-10-01), None
da Silva et al. (2001) FEMS Microbiol Lett 203: 165-171.
Branden et al. “Introduction to Protein Structure”, Garland Publishing Inc., New York, 1991, p. 247.
Witkowski et al. (1999) Biochemistry 38:11643-11650.
Lambais et al. (2000) Curr Opin Microbiol 3:459-462.
Vojnov, et al, “Evidence for a role for the gumB and gumC gene products in the formation of xanthan from its pentasaccharide repeating unit byXanthomonas campestris,” Microbiology 144:1487-1493 (1998).
Becker, et al, “Xanthan gum biosynthesis and application: a biochemical/genetic perspective,” Appl. Microbiol Biotechnol 50: 145-152 (1998).
Thompson, et al, “The CLUSTAL—X windows interface: flexible strategies for multiple sequence alignment aided by quality analysis tools” Nucl. Acids Res 25(24): 4876-4882 (1999).
Chou, et al, “TheXanthomonas campestrisgumD Gene Required for Synthesis of Xanthan Gum Is Involved In Normal Pigmentation and Virulence In Causing Black Rot,” Biochem & Biophys: Res. Comm. 233: 265-269 (1997).
Levy, et al, Dynamic Simulations of The Molecular Conformations of Wild Type and Mutant Xanthan Polymers Suggest that Conformational Differences May Contribute To Observed Differences in Viscosity. Biopolymers 38:251-272 (1996).
Talukdar, et al, “Rheological Characterization of Xanthan Gum and Hydroxypropylmethyl Cellulose with Respect to Controlled-Release Drug Delivery,” J. Pharm. Sci. 85(5): 537-540 (1996).
Kondo, et al, “Combination Effects of α-Cyclodextrin and Xanthan Gum on Rectal Absorption and Metabolism of Morphine from Hollow-Type Suppositories in Rabbits.” Biol. Pharm. Bull. 19(2): 280-286 (1996).
Watanabe, et al, “Investigation on Rectal Absorption of Indomethacin from Sustained-Release Hydrogel Suppositories Prepared with Water-Soluble Dietary Fibers, Xanthan Gum and Locust Bean Gum,” Biol. Pharm. Bull. 16(4): 391-394 (1993).
Harding, et al, “Identification, genetic and biochemical analysis of genes involved in synthesis of sugar nucleotide precursors of xanthan gum,” J. Gen. Microbiol 139: 447-457 (1993).
Watanabe, et al, “Factors Affecting Prednisolone Release from Hydrogels Prepared with Water-Soluble Dietary Fibers, Xanthan and Locust Bean Gums,” Chem. Pharm. Bull. 40(2): 459-462 (1992).
Köplin, et al, “Genetics of Xanthan Production inXanthomonas campestris: the xanA and xanB Genes are Involved in UDP-glucose and GDL-mannose Biosynthesis,” J. Bacteriol. 174(1): 191-199 (1992).
Hassler, et al, “Genetic Engineering of Polysaccharide Structure: Production of Variants of Xanthan Gum inXanthomonas campestris,” Biotechnol. Proj. 6:182-187 (1990).
Harding, et al, “Genetic and Physical Analyses of a Cluster of Genes Essential for Xanthan Gum Biosynthesis inXanthomonas campestris,” J. Bacteriol. 169(6): 2854-2861 (1987).
Osilesi, et al, “Use of xanthan gum in dietary management of diabetes mellitus,” Am. J. Clin. Nutr. 42(4): 597-603 (Oct. 1985).
Arruda Paulo
da Silva Felipe Rodrigues
da Silva Marcio Jose
Kemper Edson Luis
Leite Adilson
Fulbright & Jaworski LLP
Fundacao de Amparo a Pesquisa do Estado de Sao Paulo
Steadman David J.
LandOfFree
Isolated gum operon from Xyllela fastidiosa , isolated... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Isolated gum operon from Xyllela fastidiosa , isolated..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Isolated gum operon from Xyllela fastidiosa , isolated... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3865434