THERMOSTABLE NUCLEIC ACID POLYMERASE

• Main Authors: WANG, ALICE M, GELFAND, DAVID H
• Format: Patent
• Language: English; French
• Published: 28.11.2006
• Subjects: BEER; BIOCHEMISTRY; CHEMISTRY; COMPOSITIONS OR TEST PAPERS THEREFOR; COMPOSITIONS THEREOF; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL ORENZYMOLOGICAL PROCESSES; CULTURE MEDIA; ENZYMOLOGY; FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIREDCHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERSFROM A RACEMIC MIXTURE; MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEICACIDS OR MICROORGANISMS; METALLURGY; MICROBIOLOGY; MICROORGANISMS OR ENZYMES; MUTATION OR GENETIC ENGINEERING; PROCESSES OF PREPARING SUCH COMPOSITIONS; PROCESSES USING MICROORGANISMS; PROPAGATING, PRESERVING OR MAINTAINING MICROORGANISMS; SPIRITS; VINEGAR; WINE

The invention relates to purified thermostable DNA polymerases from Pyrodictium species, such as Pyrodictium occultum or Pyrodictium abyssi, which polymeras es catalyze the combination of nucleoside triphosphates to form a nucleic acid strand complementary to a nucleic acid template strand. The preferred polymerases are characterized by their ability to function efficiently in a polymerase chain reaction, wherein said reaction includes repeated exposure to a denaturation temperature of about 100'C. Most preferably the polymerases display 5'.fwdarw.3' exonuclease activity, i.e. are proofreading enzymes. Th e invention also provides DNAs encoding the DNA polymerase activity of the said Pyrodictium species, which DNAs can be used to construct recombinant vectors and transformed host cells for production of polypeptides having said activity. The invention also relates to the preparation of said thermostable DNA polymerases, to the use of said polymerases to amplify nucleic acids as well as to kits comprising a polymerase of the present invention.</ SDOAB>