DNA polymerase variants with reduced exonuclease activity and uses thereof
First Claim
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1. A variant of a parent polymerase wherein the parent polymerase has at least 90% sequence homology with SEQ ID NO:
- 1 and/or SEQ ID NO;
2, and wherein a difference between the parent polymerase and the variant comprises an amino acid mutation in SEQ ID NO;
5 at position 5 and at least one amino acid mutation in at least one amino acid sequence selected from SEQ ID NOS;
3, 4, 6 and 8.
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Abstract
Compositions and methods are described to modify Family B DNA polymerases that contain residual exonuclease activity that interferes with sequencing techniques and with detection of single nucleotide polymorphisms. The compositions are mutant proteins with reduced exonuclease activity compared with presently available “exo−” polymerases, and a sensitive screening assay that enables an assessment of exonuclease activity of any synthetic DNA polymerase.
17 Citations
9 Claims
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1. A variant of a parent polymerase wherein the parent polymerase has at least 90% sequence homology with SEQ ID NO:
- 1 and/or SEQ ID NO;
2, and wherein a difference between the parent polymerase and the variant comprises an amino acid mutation in SEQ ID NO;
5 at position 5 and at least one amino acid mutation in at least one amino acid sequence selected from SEQ ID NOS;
3, 4, 6 and 8. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- 1 and/or SEQ ID NO;
Specification