Patents Assigned to Diversa Corporation
  • Patent number: 7056691
    Abstract: The invention relates to ?-galactosidase and to polynucleotides encoding the ?-galactosidase. In addition methods of designing new ?-galactosidases and method of use thereof are also provided. The ?-galactosidases have increased activity and stability at increased pH and temperature.
    Type: Grant
    Filed: April 3, 2002
    Date of Patent: June 6, 2006
    Assignee: Diversa Corporation
    Inventors: Jay M. Short, Dennis Murphy, John Reid, Eric J. Mathur
  • Patent number: 7056703
    Abstract: The invention relates to thermostable polymerases that have polymerase activity temperatures in the range from 90° C. up to 113° C., such as those derived from Pyrolobus fumaria, and to polynucleotides encoding the polymerases In addition, methods of designing new thermostable DNA polymerases and methods of use thereof are also provided. The polymerases have increased activity and stability at increased pH and temperature.
    Type: Grant
    Filed: September 6, 2001
    Date of Patent: June 6, 2006
    Assignee: Diversa Corporation
    Inventors: Walter Callen, Eric J. Mathur, Jay Short
  • Patent number: 7049101
    Abstract: The invention relates to thermostable polymerases that have polymerase activity temperatures in the range from 90° C. up to 113° C., such as those derived from Pyrolobus fumaria, and to polynucleotides encoding the polymerases In addition, methods of designing new thermostable DNA polymerases and methods of use thereof are also provided. The polymerases have increased activity and stability at increased pH and temperature.
    Type: Grant
    Filed: September 6, 2000
    Date of Patent: May 23, 2006
    Assignee: Diversa Corporation
    Inventors: Walter Callen, Eric J. Mathur
  • Publication number: 20060088821
    Abstract: A process for constructing a catalogued nucleic acid library in which the proportional representation of the constituents is adjusted to advantage through the use of disclosed technologies for positive and negative selection. The resultant benefit is that significantly fewer library constituents will need to be screened in order to identify a potentially desired constituent. Moreover, library constituents that previously would have been essentially “lost” are now recoverable. Preferred embodiments of this invention include the cataloguing, normalization, and enrichment of library constituents. By way of example, but not limitation, this technology is serviceable for constructing a library that contains an adequate representation of desirable constituents that (1) are initially found in low-copy numbers within a sample source or (2) originate from an organism that is problematic to culture. Applicable uses of this invention include any library-screening endeavor previously hindered by logistical impediments.
    Type: Application
    Filed: December 21, 2001
    Publication date: April 27, 2006
    Applicant: Diversa Corporation
    Inventor: Jay Short
  • Patent number: 7033781
    Abstract: An invention comprising cellular transformation, directed evolution, and screening methods for creating novel transgenic organisms having desirable properties. Thus in one aspect, this invention relates to a method of generating a transgenic organism, such as a microbe or a plant, having a plurality of traits that are differentially activatable. Also, a method of retooling genes and gene pathways by the introduction of regulatory sequences, such as promoters, that are operable in an intended host, thus conferring operability to a novel gene pathway when it is introduced into an intended host. For example a novel man-made gene pathway, generated based on microbially-derived progenitor templates, that is operable in a plant cell. Furthermore, a method of generating novel host organisms having increased expression of desirable traits, recombinant genes, and gene products.
    Type: Grant
    Filed: September 30, 2000
    Date of Patent: April 25, 2006
    Assignee: Diversa Corporation
    Inventor: Jay M. Short
  • Patent number: 7019827
    Abstract: A GigaMatrix plate for holding a large number of small-volume fluid samples includes a base for supporting a plurality of substantially parallel, elongated capillary tubes. Each tube defines a lumen that extends through the base, and each lumen has an aspect ratio greater than about 5:1. Dimensionally, each lumen has an inner diameter that is less than approximately five hundred microns and it has a length greater than about five millimeters. Further, each tube acts to optically distinguish light that is directed toward it from the sample whenever the sample fluoresces inside the tube lumen. Also, however, light from the sample that is directed axially through the tube is emitted therefrom for optical detection of the tube and the sample therein.
    Type: Grant
    Filed: February 25, 2002
    Date of Patent: March 28, 2006
    Assignee: Diversa Corporation
    Inventor: William Michael Lafferty
  • Patent number: 7018793
    Abstract: Provided is a method of screening gene libraries derived from a mixed population of organisms for a bioactivity or biomolecule of interest. The mixed population of organisms can be a cultured population or an uncultured population from, for example, the environment. Also provided are methods of screening isolates or enriched populations of organisms, which isolates include a population that is spatially, temporally, or hierarchical, for example, of a particular species, genus, family, or class of organisms. Identified clones containing a biomolecule or bioactivity of interest can be further variegated or the DNA contained in the clone can be variegated to create novel biomolecules or bioactivities of interest.
    Type: Grant
    Filed: September 15, 2000
    Date of Patent: March 28, 2006
    Assignee: Diversa Corporation
    Inventor: Jay M. Short
  • Patent number: 6987016
    Abstract: The invention relates to ?-galactosidase and to polynucleotides encoding the ?-galactosidase. In addition methods of designing new ?-galactosidases and method of use thereof are also provided. The ?-galactosidases have increased activity and stability at increased pH and temperature.
    Type: Grant
    Filed: June 20, 2001
    Date of Patent: January 17, 2006
    Assignee: Diversa Corporation
    Inventors: Dennis Murphy, John Reid, Dan E. Robertson
  • Patent number: 6987009
    Abstract: A thermostable alpha-glycosidase derived from various Thermococcus, alcaliphilus AEDII12RA is disclosed. The enzymes are produced from native or recombinant host cells and can be utilized in the food processing industry.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: January 17, 2006
    Assignee: Diversa Corporation
    Inventors: Dennis Murphy, John Reid
  • Patent number: 6979733
    Abstract: The invention is directed to polypeptides having epoxide hydrolase activity, polynucleotides encoding the polypeptides, antibodies that bind to these polypeptides, and methods for making and using these polynucleotides and polypeptides. The epoxide hydrolases are used to catalyze the hydrolysis of epoxides and arene oxides to their corresponding diols.
    Type: Grant
    Filed: August 5, 2002
    Date of Patent: December 27, 2005
    Assignee: Diversa Corporation
    Inventors: Lishan Zhao, Eric J. Mathur, David Weiner, Toby Richardson, Aileen Milan, Mark J. Burk, Bin Han, Jay M. Short
  • Patent number: 6972183
    Abstract: A process for screening an expression library to identify clones expressing enzymes having a desired activity is provided. The process involves first generating from genomic DNA samples of one or more microorganisms an expression library comprising a plurality of recombinant cell clones, and then introducing into capillaries in a capillary array a substrate and at least a subset of the clones, either individually or as a mixture. Interaction of the substrate and a clone expressing an enzyme having the desired activity produces an optically detectable signal, which can then be spatially detected to identify capillaries containing clones producing such a signal. The signal-producing clones can then be recovered from the identified capillaries.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: December 6, 2005
    Assignee: Diversa Corporation
    Inventors: William Michael Lafferty, Jay M. Short, Martin Keller
  • Patent number: 6949369
    Abstract: The invention relates to ?-galactosidase and to polynucleotides encoding the ?-galactosidase. In addition methods of designing new ?-galactosidases and method of use thereof are also provided. The ?-galactosidases have increased activity and stability at increased pH and temperature.
    Type: Grant
    Filed: April 1, 2002
    Date of Patent: September 27, 2005
    Assignee: Diversa Corporation
    Inventors: Dennis Murphy, John Reid, Dan E. Robertson
  • Patent number: 6943001
    Abstract: The invention is directed to polypeptides having epoxide hydrolase activity, polynucleotides encoding the polypeptides, antibodies that bind to these polypeptides, and methods for making and using these polynucleotides and polypeptides. The epoxide hydrolases are used to catalyze the hydrolysis of epoxides and arene oxides to their corresponding diols.
    Type: Grant
    Filed: October 10, 2002
    Date of Patent: September 13, 2005
    Assignee: Diversa Corporation
    Inventors: Lishan Zhao, Eric J. Mathur, David Weiner, Toby Richardson, Aileen Milan, Mark J. Burk, Bin Han, Jay M. Short
  • Patent number: 6939689
    Abstract: This invention provides methods of obtaining novel polynucleotides and encoded polypeptides by the use of non-stochastic methods of directed evolution (DirectEvolution™). A particular advantage of exonuclease-mediated reassembly methods is the ability to reassemble nucleic acid strands that would otherwise be problematic to chimerize. Exonuclease-mediated reassembly methods can be used in combination with other mutagenesis methods provided herein. These methods include non-stochastic polynucleotide site-saturation mutagenesis (Gene Site Saturation Mutagenesis™) and non-stochastic polynucleotide reassembly (GeneReassembly™). This invention provides methods of obtaining novel enzymes that have optimized physical &/or biological properties. Through use of the claimed methods, genetic vaccines, enzymes, small molecules, and other desirable molecules can be evolved towards desirable properties. For example, vaccine vectors can be obtained that exhibit increased efficacy for use as genetic vaccines.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: September 6, 2005
    Assignee: Diversa Corporation
    Inventors: Jay M. Short, Tsotne David Djavakhishvili, Gerhard Johann Frey
  • Patent number: 6918738
    Abstract: A holding plate includes a flat base member with a surface that is formed with a plurality of stations (wells or depressions) for holding specimens. A panel extends downwardly from the edge of the surface to create a concavity for receiving a lid member therein. The panel also has a flange extending outwardly from the concavity. The flat lid member has a skirt with a rim that extends from the edge of the lid member to create a hollow for receiving a base member therein. In operation, a robot or mechanical device selectively engages the flange of the base member and the rim of the lid member to engage or disengage the base and lid members. This allows for individual movement of either the base member or the lid member. This also allows for collective movement of the engaged base and lid members for stacking and storage.
    Type: Grant
    Filed: March 11, 2002
    Date of Patent: July 19, 2005
    Assignee: Diversa Corporation
    Inventors: William Michael Lafferty, Scott Wayne Beaver, Charles Wilson Tweedy
  • Publication number: 20050108789
    Abstract: The invention provides novel polypeptides having phospholipase activity, including, e.g., phospholipase A, B, C and D activity, patatin activity, lipid acyl hydrolase (LAH) activity, nucleic acids encoding them and antibodies that bind to them. Industrial methods, e.g., oil degumming, and products comprising use of these phospholipases are also provided.
    Type: Application
    Filed: March 8, 2004
    Publication date: May 19, 2005
    Applicant: Diversa Corporation
    Inventors: Svetlana Gramatikova, Geoff Hazlewood, David Lam, Nelson Barton
  • Patent number: 6872526
    Abstract: Disclosed is a process for identifying clones having a specified activity of interest, which process comprises (i) generating one or more expression libraries derived from nucleic acid directly isolated from the environment; and (ii) screening said libraries utilizing a fluorescence activated cell sorter to identify said clones. More particularly, this is a process for identifying clones having a specified activity of interest by (i) generating one or more expression libraries derived from nucleic acid directly or indirectly isolated from the environment; (ii) exposing said libraries to a particular substrate or substrates of interest; and (iii) screening said exposed libraries utilizing a fluorescence activated cell sorter to identify clones which react with the substrate or substrates.
    Type: Grant
    Filed: May 3, 2001
    Date of Patent: March 29, 2005
    Assignee: Diversa Corporation
    Inventors: Jay M. Short, Martin Keller
  • Patent number: 6866824
    Abstract: Provided are methods of screening and identification of bioactivities and bioactive molecules of interest using a capillary array system. More specifically, disclosed are methods of using optical detection and capillary array-based techniques for screening libraries and recovering bioactive molecules having a desired activity or a nucleic acid sequence encoding such bioactive molecules.
    Type: Grant
    Filed: May 28, 2002
    Date of Patent: March 15, 2005
    Assignee: Diversa Corporation
    Inventors: William Michael Lafferty, Jay M. Short, Martin Keller
  • Publication number: 20050040550
    Abstract: Disclosed is a process for identifying clones having a specified activity of interest, which process comprises (i) generating one or more expression libraries derived from nuclei acid directly isolated from the environment; and (ii) screening said libraries utilizing a fluorescence activated cell sorter to identify said clones. More particularly, this is a process for identifying clones having a specified activity of interest by (i) generating one or more expression libraries derived from nucleic acid directly or indirectly isolated from the environment; (ii) exposing said libraries to a particular substrate or substrates of interest; and (iii) screening said exposed libraries utilizing a fluorescence activated cell sorter to identify clones which react with the substrate or substrates.
    Type: Application
    Filed: September 23, 2004
    Publication date: February 24, 2005
    Applicant: Diversa Corporation
    Inventors: Jay Short, Martin Keller
  • Patent number: 6855365
    Abstract: A purified and modified phytase enzyme from Escherichia coli K12 appA phytase is provided. The enzyme has phytase activity and improved thermal tolerance as compared with the wild-type enzyme. In addition, the enzyme has improved protease stability at low pH. Glycosylation of the modified phytase provided a further improved enzyme having improved thermal tolerance and protease stability. The enzyme can be produced from native or recombinant host cells and can be used to aid in the digestion of phytate where desired. In particular, the phytase of the present invention can be used in foodstuffs to improve the feeding value of phytate rich ingredients.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: February 15, 2005
    Assignee: Diversa Corporation
    Inventors: Jay M. Short, Keith A. Kretz, Kevin A. Gray, Nelson Robert Barton, James B. Garrett, Eileen O'Donoghue, Eric J. Mathur