Never again will PCR enzymes be “one-size-fits-all.” Kapa Biosystems takes a directed, high-throughput approach for engineering new DNA polymerases for particular PCR applications, such as NGS. “[Our] ability to screen hundreds of millions of unique proteins allows us to identify enzyme variants with dramatically improved functionality compared to native enzymes,” says John Foskett, technical director at Kapa Biosystems, who engineered the new high-fidelity KAPA HiFi DNA Polymerase for amplifying NGS libraries. “It was optimized to reduce PCR-induced bias and improve yield, resulting in more uniform sequencing coverage and increased library complexity.”