Mutant chimeric DNA polymerases

摘要

The invention provides mutant, chimeric thermostable DNA polymerase enzymes, which chimeric thermostable DNA polymerase enzymes consist of an N-terminal region derived from the 5'-nuclease domain of a Thermus species DNA polymerase and a C-terminal region derived from the 3' to 5' exonuclease andpolymerase domains of Tma DNA polymerase. These mutant chimeric thermostable DNA polymerase enzymes have improved properties in nucleic acid sequencing reactions. Also provided are nucleic acids encoding said mutant chimeric thermostable DNA polymerase enzymes, vectors comprising said nucleic acids and host cells transformed with said vectors. Also provided are compositions comprising said mutated, chimeric thermostable DNA polymerase enzymes and non-ionic polymeric detergent(s). Futhermore methods for producing the said enzymes and methods and kits for using the said enzymes are provided.