PACE Assays

Discover PACE Assays for a range of applications including genotyping and CRISPR gene edit detection.

PACE® GENOTYPING ASSAYS

PACE (PCR Allelic Competitive Extension) genotyping chemistry is a homogeneous, PCR-based allele-specific technology for the analysis of DNA sequence variants, most commonly SNPs (Single Nucleotide Polymorphisms) and Indels (insertion / deletions).

PACE genotyping chemistry is comprised of two parts:

1. PACE Genotyping Assay: two allele-specific forward primers and one common, reverse primer. The allele-specific forward primers each have different 3′ terminal bases reflecting the target variant, and a unique 5’ tail sequence which is incorporated as part of the fluorescent signal mechanism.

2. PACE Genotyping Master Mix: containing all remaining components required for PCR and the generation of fluorescent signals. PACE Genotyping Master Mix contains a novel, universal, fluorescent reporting cassette to produce machine-readable fluorescent signals (FAM and HEX) corresponding to the assay genotypes.
When combined with sample DNA, these components create a PACE Genotyping Reaction, as illustrated in the figure.

We have extensive knowledge and experience in assay design, especially when it comes to allele-specific PCR. PACE Genotyping Assays are available to purchase either Validated and Unvalidated. Validated assays require customer DNA to validate and optimise, for guaranteed performance. Unvalidated assays are designed in silico and supplied untested.

Designed for high-throughput use, PACE assays integrate smoothly into automated pipetting platforms for rapid reaction assembly and consistent genotyping.

a diagram of a dna sequence

CRISPR Gene Edit Detection Assays

High-throughput screening of gene edits using PACE Allele-Specific Genotyping for agriculture and life sciences.

Transform Your Genome Editing Workflow with PACE® Genotyping
From improving crop traits to advancing life sciences, PACE empowers researchers with a faster, cost-effective alternative to sequencing—detecting SNPs, knockouts, and more, in high-throughput, even in crude DNA samples. High-throughput sequencing of gene edits, though accurate, is costly and data-heavy. As an alternative, PACE® genotyping offers a rapid, scalable, and affordable method for primary screening. It enhances genome editing workflows by efficiently identifying edits, supporting applications in both agricultural and biomedical research.

All Products

CRISPR Assay

Fast, affordable PACE®-based screening to detect CRISPR and gene edits with high accuracy in high-throughput applications.

genotyping assay

Custom PACE® assays designed for your target sequence. Ensure reliable, accurate allele detection with full PACE® compatibility.

Don’t know which one to get?

Unsure which mix to choose? Email us for help choosing the right mix for your application

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MEET OUR TEAM

Steve AsquithManaging Director
Steve began his career in the Genetics Division of GlaxoSmithKline, as part of the team establishing GSK’s high-throughput core genotyping laboratory. Steve joined KBioscience when it was first founded in 2002 and was a key driver in taking the company from a small start-up to a multi-national service laboratory, quickly growing the company’s revenue to over $7.5M p.a. Following the acquisition of Kbioscience by LGC in 2011, Steve was appointed Global Director of Operations for LGC Genomics, responsible for over 100 staff in Europe and N. America, successfully elevating the genotyping products and service business. Steve held a crucial leadership role until he left in 2016. In 2017 Steve joined forces with John Holme to create 3CR Bioscience, a new company with a mission to deliver outstanding, customer-focused genotyping products with innovation and affordability at its core.
Dr. John HolmeTechnical Director

John joined KBioscience shortly after it was founded, in 2003, and became Head of Technical Development, building the company’s genotyping and DNA extraction product portfolio and service delivery until 2011 when it was acquired by LGC. Post-acquisition, John was appointed Head of Technical Group for LGC Genomics, in charge of all Research & Development and Technical Support activities for the company. In this role John continued to build on the high-quality products and services provided to the companies growing customer base.

During the 19 years John has worked in commercial R&D, he has co-invented numerous highly successful products including PACE®, ProbeSure, KASP™, KlearKall, KlearGene, KlearAmp and KlearTaq™, creating breakthrough offerings in genotyping and extraction and generating huge revenues for the companies he has worked in. In 2017, he joined forces with Steve Asquith and started 3CR Bioscience. John is dedicated to developing outstanding, innovative genotyping products and providing the very best technical support to customers globally.

Dr. Nisha JainOperations Director

Nisha has been innovating since the start of her career at Geneform Technologies developing Iso-thermal Genotyping Technologies. Nisha joined KBioscience in 2008, as Senior R&D Scientist and key account Technical Support Scientist, developing KASP and Klearkall performance and coinventing two further versions of KASP.

Nisha has more than 15 years’ experience working in molecular biology and genotyping technologies, with extensive experience in the areas of R&D, Quality Assurance and Customer Technical Support. She has technically assisted many giants of the industry with their protocol development and troubleshooting and continues to deliver high-quality support and guidance. In 2018, Nisha joined 3CR Bioscience as Operations Director where she continues to develop PACE and ProbeSure for an increasing range of applications, and to grow 3CR Bioscience’s new product pipeline. Nisha is dedicated to developing outstanding, innovative genotyping products and providing the very best technical support to customers globally.

Nazma SaffinGeneral Manager
For 20 years Nazma Saffin has worked and gained extensive expertise within the genotyping sector. Working at Kbioscience and then LGC, she has held operational leadership posts responsible for manufacturing and laboratory services. With experience of ISO 9001 implementation, production scale up and LEAN operations, Nazma has successfully led highly profitable production departments. Joining 3CR Bioscience in 2022, Nazma is committed to delivering operational excellence.
Greig PollandAutomation and Support Manager

Greig is a hands-on automation specialist and team leader with a strong background in laboratory and industrial automation. He has spent over 25 years developing, installing, and supporting automated systems that transformed laboratory workflows. During this time, Greig worked closely with scientists and engineers to tailor automation solutions for genotyping and molecular biology, an experience that sparked his lasting passion for combining technology with practical science.

Since then, Greig has built on that foundation through leadership roles where he leads automation and support operations. He’s known for being approachable, commercially minded, and deeply committed to helping teams and customers get the best from their technology.

Whether managing a complex automation rollout or helping a customer troubleshoot in real time, Greig brings a thoughtful, collaborative approach that keeps people ,not just machines, at the centre of what he does.