Thermostable polymerase
First Claim
1. A thermostable enzyme having polymerase activity and substantially no nuclease activity, where the amino acid sequence of said enzyme comprises a sequence of nine amino acid residues at least proximal to the N-terminus of the enzyme that has less than 50% but greater than 40% amino acid identity with residues 280 to 288 of naturally occurring Thermus aquaticus polymerase.
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Accused Products
Abstract
A thermostable enzyme having polymerase activity and substantially no nuclease activity is provided. The thermostable enzyme is characterized by comprising a sequence of nine amino acid residues at least proximal to the N-terminus that has less than 50% but greater than 40% amino acid sequence identity with residues 280 to 288 of the naturally occurring Thermus aquaticus polymerase. The subject enzyme finds use in a variety of different application in which polynucleotides are enzymatically produced, particularly in PCR based applications.
58 Citations
37 Claims
- 1. A thermostable enzyme having polymerase activity and substantially no nuclease activity, where the amino acid sequence of said enzyme comprises a sequence of nine amino acid residues at least proximal to the N-terminus of the enzyme that has less than 50% but greater than 40% amino acid identity with residues 280 to 288 of naturally occurring Thermus aquaticus polymerase.
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6. A thermostable enzyme having polymerase activity and substantially no nuclease activity, wherein the N-terminal domain of said enzyme comprises a sequence of nine amino acid residues at least proximal to the N-terminus, wherein said nine amino acid residues are:
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space="preserve" listing-type="equation">MRGHEX.sub.1 GLX.sub.2wherein X1 and X2 are hydrophilic residues. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. A thermostable enzyme having polymerase activity and substantially no nuclease activity, wherein said enzyme is 553 amino acid residues long, wherein the nucleotide sequence of residues 1 to 9 is:
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space="preserve" listing-type="equation">MRGHEX.sub.1 GLX.sub.2wherein X1 and X2 are polar uncharged residues; and the amino acid sequence of residues 10 to 553 is substantially the same as residues 289 to 832 of the naturally occurring Thermus aquaticus polymerase. - View Dependent Claims (14, 15)
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16. A thermostable polymerase having the amino acid sequence of SEQ ID NO:
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17. A thermostable enzyme having polymerase activity and substantially no nuclease activity, wherein said enzyme is 560 amino acid residues long, wherein the nucleotide sequence of residues 1 to 15 is:
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space="preserve" listing-type="equation">TMITNSMRGHEX.sub.1 GLX.sub.2wherein X1 and X2 are polar uncharged residues; and the amino acid sequence of residues 16 to 560 is substantially the same as residues 289 to 832 of the naturally occurring Thermus aquaticus polymerase. - View Dependent Claims (18, 19)
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20. A thermostable polymerase having the amino acid sequence of SEQ ID NO:
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Specification