High viscosity xanthan polymer preparations

Details High viscosity xanthan polymer preparations High viscosity xanthan polymer preparations

2010-12-06

2011-10-11

Raghu, Ganapathirama (Department: 1652)

Chemistry: molecular biology and microbiology

Micro-organism, per se ; compositions thereof; proces of...

Bacteria or actinomycetales; media therefor

C435S069100, C435S320100, C435S104000, C424S488000, C426S005000, C514S054000, C536S123000

Reexamination Certificate

active

08034604

ABSTRACT:
Increasing the molecular length of xanthan polymer makes a higher viscosity xanthan composition. Xanthan with higher specific viscosity characteristics provides more viscosity at equivalent concentration in food, industrial and oilfield applications. Methods for increasing the viscosity of xanthan include inducing particular key genes and increasing copy number of particular key genes.

REFERENCES:
patent: 5854034 (1998-12-01), Pollock et al.
patent: 6391596 (2002-05-01), Talashek et al.
patent: 7439044 (2008-10-01), Patel et al.
patent: 87/05938 (1987-10-01), None
Vorholter et al., 2001, “Lipopolysaccharide Biosynthesis inXanthomonas campestrispv. Campestris: A Cluster of 15 Genes is Involved in the Biosynthesis of the LPS O-Antigen and the LPS Core,” Mol. Genet Genomics, 266:79-95.
Gagarrinho, XP002607953; Figure 1.4, 2002.
Vognov et al., 2001, “Expression of the Gum Operon Directing Xanthan Biosynthesis inXanthomonas campestrisand its Regulation in Planta,” MPMI, 14(6):768-774.
Hagelin et al., 2003, “Structural Analysis of Xanthan,” Presented at the Bariloche Protein Symposium, San Carlos de Bariloche, vol. 27, p. 68.
European Search Report for EP Application No. 10177593.0 dated Dec. 9, 2010.
Becker et al., “Xanthan gum biosynthesis and application: a biochemical/genetic perspective,” Appl. Microbiol. Biotechnol., 1998, vol. 50, 145-152.
Born et al., “Xanthan,” Biopolymers, Wiley-VCH, 259-297, 2005.
De Pieri et al., “Overexpression, purification and biochemical characterization of GumC, an enzyme involved in the biosynthesis of exopolysaccharide byX. fastidiosa,” Protein Expression and Purification, 2004, vol. 34, 223-228.
Feinbaum, in Current Protocols in Molecular Biology, 1998, by John Wiley & Sons, 1.5.1-1.5.17.
Harding et al., “Genetic and Physical Analyses of a Cluster of Genes Essential for Xanthan Gum Biosynthesis inXanthomonas campestris,” J. Bacteriol., Jun. 1987, 2854-2861.
Harding et al., “Genetics and Biochemistry of Xanthan Gum Production byXanthomonas campestris,” Food Biotech. Microorganisms, 1995, VCH Publishers, Inc., 495-514.
Hassler et al., “Genetic Engineering of Polysaccharide Structure: Production of Variants of Xanthan Gum inXanthomonas campestris,” Biotechnol. Prog., 1990, vol. 6(3), 182-187.
Katzen et al., “Xanthomonas campestrispv. campestris gum mutants: Effects on Xanthan biosynthesis and plant virulence,” J. Bacteriol. 1998, vol. 180(7), 1607-1617.
Rao et al., “Imrpovement in Bioreactor Productivities Using Free Radicals: HOCI-Induced Overproduction of Xanthan Gum fromX.campestrisand Its Mechanism,” Biotechnol. Bioeng., 2001, vol. 72(1), 62-68.
Examination Report, European Patent Application No. 04757814.1, mailed Feb. 24, 2010.
Supplementary European Search Report, European Patent Application No. 04757814.1, mailed Aug. 7, 2009.
International Search Report, International Application No. PCT/US04/08302 (WO2004/084814), mailed Aug. 15, 2005.
Hagelin et al., “Structural Analysis of Xanthan,” Biocell, Nov. 2003, vol. 27, Suppl. I, 68.
Kidby et al., “Maintenance Procedures for the Curtailment of Genetic Instability:Xanthomonas campestrisNRRL B-1459,” Appl. and Environ. Microbiol., 1977, 33(4), 840-845.
Ditta et al., “Plasmids Related to the Broad Host Range Vector, pRK290, Useful for Gene Cloning and for Monitoring Gene Expression,” Plasmid, 1985, 13(2), 149-153.
Simon et al., “A Broad Host Range Mobilization System for in vivo Genetic Engineering: Transposon Mutagenesis in Gram-negative Bacteria,” Biotechnology, 1983, 1, 784-791.
Katzen et al., “Promoter Analysis of theXanthomonas campestrispv. campestris Gum Operon Directing Biosynthesis of the Xanthan Polysaccharide,” J. Bacteriol., 1996, 178(14), 4313-4318.
Becker et al., “Low-Molecular-Weight Succinoglycan is Predominantly Produced by Rhizobium Meliloti Strains Carrying a Mutated ExoP Protein Characterized by a Periplasmic N-terminal Domain and a Missing C-terminal Domain,” Mol. Microbiol., 1995, 16(2), 191-203.
Schafer et al., “Small Mobilizable Multi-Purpose Cloning Vectors Derived from theEscherichia coliPlasmids pK18 and pK19: Selection of Defined Deletions in the Chromosome of Corynebacterium Glutamicum,” Gene, 1994, 145(1), 69-73.
Yanisch-Perron et al., “Improved M13 Phage Cloning Vectors and Host Strains: Nucleotide Sequences of the M13mp18 and pUC19 Vectors,” Gene, 1985, 33(1), 103-119.
Kovach et al., “Four New Derivatives of the Broad-Host-Range Cloning Vector pBBR1MCS, Carrying Different Antibiotic-Resistance Cassettes,” Gene, 1995, 166(1), 175-176.
Harding et al., “Identification, Genetic and Biochemical Analysis of Genes Involved in Synthesis Sugar Nucleotide Precursors of Xanthan Gum,” J. Gen. Microbiol., 1993, 139, 447-45T.
Broun et al., “Catalytic Plasticity of Fatty Acid Modification Enzymes Underlying Chemical Diversity of Plant Lipids,” Science, 1998, vol. 282:1315-1317.
Devos et al., “Practical Limits of Function Prediction,” Proteins: Structure, Function, and Genetics, 2000, vol. 41:98-107.
Kisselev, “Polypeptide Release Factors in Prokaryotes and Eukaryotes: Same Function, Different Structure,” Structure, 2002, vol. 10:8-9.
Seffernick et al., “Melamine Deaminase and Atrazine Chlorohydrolase: 98 Percent Identical But Functionally Different,” J. Bacterial, 2001, vol. 183(8):2405-2410.
Vojnov et al., “Evidence for a Role of the gumB and gumC gene products in the formation of xanthan from its pentasaccharide repeating unit by Xanthomonas campestris,” Microbiology, 1998, vol. 144:1487-1493.
Whisstock et al., “Prediction of Protein Function from Protein Sequence,” Q. Rev. Biophysics, 2003, vol. 36 (3):307-340.
Witkowski et al., “Conversion of b-ketoacyl Synthase to Malonyl Decarboxylase by Replacement of the Active Cysteine with Glutamine,” Biochemistry, 1999, vol. 38:11643-11650.

Affiliated with

Also associated with

Rating

High viscosity xanthan polymer preparations does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High viscosity xanthan polymer preparations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High viscosity xanthan polymer preparations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4284782