Site-directed Mutagenesis Using DNA Polymerase

Site-directed Mutagenesis Using DNA Polymerase

27 Mar 2016

Site-directed mutagenesis is a powerful tool for protein engineering and the study of protein structure and function. Numerous methods of site-directed mutagenesis that exploit the primer extension technique have been developed. These methods generate heteroduplex species containing one mutated and one non-mutated strand; subsequent replication and segregation of these molecules inevitably results in a population heavily contaminated with wild-type DNA. Various methods that circumvent the replication of non-mutated DNA or that separate the two species have been developed, but these methods tend to be more difficult and lengthy. This application note describes a fast, simple, and efficient system for the introduction of specific mutations, insertions and/or deletions into DNA cloned in a double-stranded plasmid.

KAPA HiFi Uracil+

Kapa Biosystems, Inc.

KAPA HiFi DNA Polymerase provides high fidelity next-generation sequencing library amplification with the highest yield, lowest bias, and most uniform sequence coverage available. These characteristics are retained in KAPA HiFi Uracil+ DNA Polymerase, a modified version of KAPA HiFi engineered to tolerate uracil residues. The new enzyme is particularly well suited for applications employing bisulfite DNA conversion, which typically produces low concentrations of AT-rich DNA. KAPA HiFi HotStart Uracil+ ReadyMix (2X) is a ready-to-use cocktail containing all components required for PCR, except primers and template.   Features: Higher yields and reduced size bias More uniform sequence coverage Improved representation of AT-rich sequences   Applications: Methylation analysis – amplification of bisulfite-converted DNA for sequencing Amplification of damaged DNA samples Prevention of false-positive results due to carryover amplicon contamination

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KAPA HiFi PCR Kits

Kapa Biosystems, Inc.

KAPA HiFi DNA Polymerase is a novel, single-enzyme system that exhibits industry-leading performance when compared with other high fidelity polymerases and polymerase blends. KAPA HiFi has been engineered to have an increased affinity for DNA without the need for accessory protein domains. The intrinsic high processivity of KAPA HiFi results in significant improvements to yield, sensitivity, speed, target length, and the ability to amplify difficult templates (e.g AT- and GC-rich). The error rate of KAPA HiFi PCR Kits is 100X lower than wild-type Taq DNA polymerase.   Features: Achieve the highest fidelity Increased processivity, strong proofreading activity, and optimized buffer system result in superior accuracy The error rate of KAPA HiFi is 100X lower than Taq, 40X lower than polymerase blends, 3X lower than Pfu Ultra and 2X lower than Phusion Improve performance on GC- and AT-rich templates Achieve higher success rates across targets up to 84% GC content Higher yields when amplifying AT-rich templates Amplify longer targets with greater sensitivity  High-fidelity PCR of long and complex genomic templates Improved sensitivity High speed allows significantly shorter reaction times for long range PCR   Applications: High-fidelity PCR Amplification of DNA fragments for cloning and protein expression or genomic characterization Site-directed mutagenesis Next-generation sequencing library amplification

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Site-directed Mutagenesis Using DNA Polymerase