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May 10, 2019

Improved assembly and variant detection of a haploid human genome using single-molecule, high-fidelity long reads

The sequence and assembly of human genomes using long-read sequencing technologies has revolutionized our understanding of structural variation and genome organization. We compared the accuracy, continuity, and gene annotation of genome assemblies generated from either high-fidelity (HiFi) or continuous long-read (CLR) datasets from the same complete hydatidiform mole human genome, CHM13. We find that the HiFi sequence data assemble an additional 10% of duplicated regions and more accurately represent the structure of large tandem repeats, as validated with orthogonal analyses. Additionally, the HiFi genome assembly was generated in significantly less time with fewer computational resources than the CLR assembly. Although…

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May 6, 2019

A High-Quality Genome Assembly from a Single, Field collected Spotted Lanternfly (Lycorma delicatula) using the PacBio Sequel II System

A high-quality reference genome is an essential tool for applied and basic research on arthropods. Long-read sequencing technologies may be used to generate more complete and contiguous genome assemblies than alternate technologies, however, long-read methods have historically had greater input DNA requirements and higher costs than next generation sequencing, which are barriers to their use on many samples. Here, we present a 2.3 Gb de novo genome assembly of a field-collected adult female Spotted Lanternfly (Lycorma delicatula) using a single PacBio SMRT Cell. The Spotted Lanternfly is an invasive species recently discovered in the northeastern United States, threatening to damage…

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April 23, 2019

Application Brief: Whole genome sequencing for de novo assembly – Best Practices

Single Molecule, Real-Time (SMRT) Sequencing on the Sequel II System enables easy and affordable generation of high-quality de novo assemblies of even the most complex genomes. With megabase-size contig N50s, consensus accuracies >99.99%, and tools for phasing haplotypes you can capture undetected SNVs, fully intact genes, and regulatory regions embedded in complex structures that fragmented draft genomes often miss.

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April 23, 2019

Application Brief: Structural variant detection using whole genome sequencing – Best Practices

With the Sequel II System powered by Single Molecule, Real-Time (SMRT) Sequencing technology and SMRT Link v7.0, you can affordably and effectively detect structural variants (SVs), copy number variants, and large indels ranging in size from tens to thousands of base pairs. PacBio long-read whole genome sequencing comprehensively resolves variants in an individual with high precision and recall. For population genetics and pedigree studies, joint calling powers rapid discovery of common variants within a sample cohort.

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April 23, 2019

Application Brief: Variant detection using whole genome sequencing with HiFi reads – Best Practices

With highly accurate long reads (HiFi reads) from the Sequel II System, powered by Single Molecule, Real-Time (SMRT) Sequencing technology, you can comprehensively detect variants in a human genome. HiFi reads provide high precision and recall for single nucleotide variants (SNVs), indels, structural variants (SVs), and copy number variants (CNVs), including in difficult-to-map repetitive regions.

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