Nuclease

Chemistry: molecular biology and microbiology – Enzyme – proenzyme; compositions thereof; process for... – Hydrolase

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C536S023200

Reexamination Certificate

active

06893854

ABSTRACT:
A process for producing a polynucleotide encoding a restriction endonuclease with an altered specificity, which process comprises:(a) mutagenising a polynucleotide encoding a restriction endonuclease with specificity for a recognition sequence so as to produce one or more mutated polynucleotides; and(b) isolating therefrom a polynucleotide encoding a mutated restriction endonuclease with specificity for an altered recognition sequence by selecting a polynucleotide which expresses a restriction endonuclease with methylase specificity for the altered recognition sequence.

REFERENCES:
patent: 6413758 (2002-07-01), Xu et al.
Roberts, et al. (2003) REBASE database, Eco57I, 6 pages.*
Janulaitis, A., et al. (1992) Nucl. Acids Res. 20(22), 6043-6049.*
Rimseliene, R. et al.: “Site-directed mutagenesis of type IV restriction endonuclease Eco571” Biologija (1997) (1) 31-33.
Heitman J. et al.: “Mutants of the ECO-R-I Endonuclease with Promiscuous Substrate Specificity Implicate Residues Involved in substrate Recognition”, EMBO (European Molecular Biology Organization) Journal 9:10 (1990) 3369-3378.
Petrusyte M. et al.: “Restriction Endonuclease of a New Type” Gene (Amsterdam) 74:1 (1988) 89-91.
Janulaitis. Arvydas et al.: “Cloning and sequence analysis of the genes coding for Eco571 type IV restriction-modification enzymes” Nucleic Acids Research 20:22 (1992) 6051-6056.
Alves J et al. (1989) “Changing the hydrogen-bonding potential in the DNA binding site of EcoRI by site-directed mutagenesis drastically reduces the enzymatic activity, not, however, the preference of this restriction endonuclease for cleavage within the site-GAATTC,”Biochemistry28: 2678-84.
Anderson J (1993) “Restriction endonucleases and modification methylases,”Current Opinion in Structural Biology3:24-30.
Cesnaviciene E et al. (2001) “Characterization of AloI, a restriction-modification system of a new type,”J Mol Biol314: 205-16.
Chandrasegaran S et al (1999) “Chimeric restriction enzymes: what is next?,”Biol Chem380: 841-8.
Dorner LF et al. (1999) “Genetic analysis of the base-specific contacts of BamHI restriction endonuclease,”J Mol Biol285: 1515-23.
Flores H et al. (1995) “Saturation mutagenesis of His114 of EcoRI reveals relaxed-specificity mutants,”Gene157: 295-301.
Geiger R et al. (1989) “Genetic engineering of EcoRI mutants with altered amino acid residues in the DNA binding site: physicochemical investigations give evidence for an altered monomer/dimer equilibrium for the Gln144Lys145 and Gin144Lys145Lys200 mutants,”Biochemistry28: 2667-77.
Gubler M et al (1992) “Recombination of constant and variable modules alters DNA sequence recognition by type IC restriction-modification enzymes,”Embo J11: 233-40.
Hager PW et al. (1990) “Probing the role of glutamic acid 144 in the EcoRI endonuclease using aspartic acid and glutamine replacements,”J Biol Chem265: 21520-6.
Jeltsch A et al. (1996) “Engineering novel restriction endonucleases: principles and applications,”Trends Biotechnol14: 235-8.
Jeltsch A et al. (1993) “Mutational analysis of the function of Gln115 in the EcoRI restriction endonuclease, a critical amino acid for recognition of the inner thymidine residue in the sequence -GAATTC- and for coupling specific DNA binding to catalysis,”J Mol Biol229: 221-34.
Kim YG et al. (1994) “Chimeric restriction endonuclease,”Proc Natl Acad Sci U S A91: 883-7.
Kim YG et al. (1998) “Chimeric restriction enzyme: Gal4 fusion to FokI cleavage domain,”Biol Chem379: 489-95.
Kim YG et al. (1996) “Hybrid restriction enzymes: zinc finger fusions to Fok I cleavage domain,”Proc Natl Acad Sci U S A93: 1156-60.
Kong H et al. (1994) “Characterization of Bcgl, a new kind of restriction-modification system,”J Biol Chem269: 683-90.
Kumar S et al. (1994) “The DNA (cytosine-5) methyltransferases,”Nucleic Acids Res22: 1-10.
Lanio T et al. (1996) “EcoRV-T94V: a mutant restriction endonuclease with an altered substrate specificity towards modified oligodeoxynucleotides,”Protein Eng9: 1005-10.
Lanio T et al. (2000) “On the possibilities and limitations of rational protein design to expand the specificity of restriction enzymes: a case study employing EcoRV as the target,”Protein Eng13: 275-81.
Leung D (1989) “A method for random mutagenesis of a defined DNA segment using a modified polymerase chain reaction,”Technique, A Journal of Methods in Cell and Molecular Biology(1) 1: 11-15.
Malone T et al. (1995) “Structure-guided analysis reveals nine sequence motifs conserved among DNA amino-methyltransferases, and suggests a catalytic mechanism for these enzymes,”J Mol Biol253: 618-32.
Meister J et al. (1993) “Microevolution by transposition: drastic modification of DNA recognition by a type I restriction enzyme following Tn5 transposition,”Embo J12: 4585-91.
OSuna J et al. (1991) “Combinatorial mutagenesis of three major groove-contacting residues of EcoRI: single and double amino acid replacements retaining methyltransferase-sensitive activities,”Gene106: 7-12.
Piekarowicz A et al. (1999) “The HaelV restriction modification system ofHaemophilus aegyptiusis encoded by a single polypeptide,”J Mol Biol293: 1055-65.
Schottler S et al. (1998) “Protein engineering of the restriction endonuclease EcoRV—structure-guided design of enzyme variants that recognize the base pairs flanking the recognition site,”Eur J Biochem258: 184-91.
Stemmer WP (1994) “DNA shuffling by random fragmentation and reassembly: in vitro recombination for molecular evolution,”Proc Natl Acad Sci U S A91: 10747-51.
Stemmer WP (1994) “Rapid evolution of a protein in vitro by DNA shuffling,”Nature370: 389-91.
Thielking V et al. (1991) “Site-directed mutagenesis studies with EcoRV restriction endonuclease to identify regions involved in recognition and catalysis,”Biochemistry30: 6416-22.
Timinskas A et al. (1995) “Sequence motifs characteristic for DNA [cytosine-N4] and DNA [adenine-N6] methyltransferases. Classification of all DNA methyltransferases,”Gene157: 3-11.
Vipond IB et al. (1996) “Random mutagenesis targeted to the active site of the EcoRV restriction endonuclease,”Biochemistry35: 1701-11.
Whitaker RD et al. (1999) “A mutant of BamHI restriction endonuclease which requires N6-methyladenine for cleavage,”J Mol Biol285 1525-36.
Yanofsky SD et al. (1987) “Clustering of null mutations in the EcoRI endonuclease,”Proteins2: 273-82.
Zhou YH et al. (1991) “Random mutagenesis of gene-sized DNA molecules by use of PCR with Taq DNA polymerase,”Nucleic Acids Res19: 6052.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Nuclease does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

     

Profile ID: LFUS-PAI-O-3405098

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.