Shane Beck | Jan 4, 1998 | 10 min read
Date: January 5, 1998 Chart 1, Chart 2 n the beginning there was Taq. Actually, there were others before Taq. There were precursory polymerases, such as that from E. coli, that lost their enzymatic activities at elevated temperatures. This shortfall made thermal cycling a time-consuming chore, with the necessity of adding new polymerase after each cycle. Then came the thermostable polymerases such as Taq DNA polymerase, which was isolated from the thermophilic, aerobic bacterium Thermus aquat