SSB-polymerase fusion proteins
First Claim
Patent Images
1. An isolated or purified single stranded DNA binding protein (SSB)-nucleic acid polymerase fusion protein wherein said SSB comprises amino acids 1 to 150 of SEQ ID NO:
- 2, wherein said fusion protein comprises at least 50% polymerase activity, 3′
-5′
exonuclease activity and/or 5′
-3′
exonuclease activity of the fusion protein shown in SEQ ID NO;
2, and wherein the presence of said SSB enhances fidelity of said fusion protein compared to an identical nucleic acid polymerase that is not joined to said SSB.
0 Assignments
0 Petitions
Accused Products
Abstract
Fusion proteins comprising a single strand DNA binding protein and a nucleic acid polymerase (e.g. DNA polymerase or reverse transcriptase). These high fidelity proteins are suitable for use in nucleic acid amplification methods, including the polymerase chain reaction (PCR).
90 Citations
17 Claims
-
1. An isolated or purified single stranded DNA binding protein (SSB)-nucleic acid polymerase fusion protein wherein said SSB comprises amino acids 1 to 150 of SEQ ID NO:
- 2, wherein said fusion protein comprises at least 50% polymerase activity, 3′
-5′
exonuclease activity and/or 5′
-3′
exonuclease activity of the fusion protein shown in SEQ ID NO;
2, and wherein the presence of said SSB enhances fidelity of said fusion protein compared to an identical nucleic acid polymerase that is not joined to said SSB. - View Dependent Claims (2, 3, 4, 5, 6, 9, 10, 11, 12, 13, 14, 15, 16, 17)
- 2, wherein said fusion protein comprises at least 50% polymerase activity, 3′
-
7. An isolated or purified Sulfolobus sofataricus (Sso) SSB-Thermococcus zilligi (Tzi) DNA polymerase fusion protein wherein said Sso SSB comprises amino acids 1 to 150 of SEQ ID NO:
- 2 and has at least 50% polymerase activity, 3′
-5′
exonuclease activity and/or 5′
-3′
exonuclease activity of the fusion protein shown in SEQ ID NO;
2.
- 2 and has at least 50% polymerase activity, 3′
-
8. A fusion polymerase protein that comprises an amino acid sequence that has at least 75% sequence identity to SEQ ID NO:
- 2 and has at least two joined heterologous domains, wherein said heterologous domains comprise;
a. a single-stranded DNA binding protein (SSB) domain comprising amino acids 1 to 150 of SEQ ID NO;
2; andb. a polymerase domain, and wherein the relative fidelity of said polymerase fusion protein is enhanced compared to the fidelity of the corresponding full length wild type polymerase protein lacking said SSB domain.
- 2 and has at least two joined heterologous domains, wherein said heterologous domains comprise;
Specification