August 19, 2021  |  Human genetics research

Whitepaper: Structural variation in the human genome

Structural variation accounts for much of the variation among human genomes. Structural variants of all types are known to cause Mendelian disease and contribute to complex disease. Learn how long-read sequencing is enabling detection of the full spectrum of structural variants to advance the study of human disease, evolution and genetic diversity.


August 19, 2021  |  

Technical Note: Preparing DNA for PacBio HiFi sequencing – Extraction and quality control

Single Molecule, Real-Time (SMRT) Sequencing uses the natural process of DNA replication to sequence long fragments of native DNA in order to produce highly accurate long reads, or HiFi reads. As such, starting with high-quality, high molecular weight (HMW) genomic DNA (gDNA) will result in longer libraries and better performance during sequencing. This technical note is intended to give recommendations, tips and tricks for the extraction of DNA, as well as assessing and preserving the quality and size of your DNA sample to be used for HiFi sequencing.


August 19, 2021  |  

Technical Note: Preparing samples for PacBio whole genome sequencing for de novo assembly – Collection and storage

Single Molecule, Real-Time (SMRT) Sequencing uses the natural process of DNA replication to sequence long fragments of native DNA. As such, starting with high-quality, high molecular weight (HMW) genomic DNA (gDNA) will result in better sequencing performance across difficult to sequence regions of the genome. To obtain the highest quality, long DNA it is important to start with sample types compatible with HMW DNA extraction methods. This technical note is intended to give general guidance on sample collection, preparation, and storage across a range of commonly encountered sample types used for SMRT Sequencing whole genome projects. It is important to note that all samples and projects are unique and may not be comprehensively addressed in this document.


August 19, 2021  |  Sample + library preparation

Product Note: SMRTbell express template prep 2.0 for large-insert libraries

The SMRTbell Express Template Prep Kit 2.0 provides a streamlined, single-tube reaction strategy to generate SMRTbell libraries from 500 bp to >50 kb insert size targets to support large-insert genomic libraries, multiplexed microbial genomes and amplicon sequencing. With this new formulation, we have increased both the yield and efficiency of SMRTbell library preparation for SMRT Sequencing while further minimizing handling-induced DNA damage to retain the integrity of genomic DNA (gDNA). This product note highlights the key benefits, performance, and resources available for supporting de novo genome sequencing and structural variant detection projects. Our large-insert gDNA protocol has been streamlined to support SMRTbell library generation in only 4 hours, making complete construction in less than a day. This significantly reduces time to results for generating high-quality genome assemblies to fully characterize SNPs and structural variants. Additional key benefits of this template preparation kit and updated protocol include library generation with as little as 2 to 3 µg input gDNA and flexibility to accommodate and adjust input amount in accordance with the extracted gDNA quality.


August 19, 2021  |  

Product Note: Fast, high-resolution DNA sizing with the fragment analyzer system

The Agilent 5200, 5300, and 5400 Fragment Analyzer instruments are fast, high-resolution benchtop capillary electrophoresis (CE) platforms that utilize proprietary markers to accurately size fragments ranging from 10 to 50 kb. This platform allows important DNA quality checkpoints to be completed in one hour for de novo large-genome sequencing projects and other PacBio applications leveraging multi-kilobase read lengths. The instrument can be used in place of time-consuming QC steps involving pulsed field gel electrophoresis (PFGE), saving time by avoiding multiple overnight gel runs when preparing large-insert SMRTbell libraries. Alternative DNA-sizing instruments cannot accurately resolve large DNA fragments in this range.


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