Bst 2.0 DNA Polymerase is a recombinase expressed and purified by E. coli. The gene is derived from Bacillus stearothermophilus with partial point mutations based on the original sequence. This protein has stronger 5'→3' DNA polymerase activity, strand displacement activity, reverse transcription activity, and no 5'→3' exonuclease activity. It is used in DNA loop-mediated isothermal amplification (LAMP), multiple displacement amplification (MDA), whole genome amplification (WGA), etc.