Explore how high-quality genomes contribute to critical scientific endeavors.
PacBio Sequencing is characterized by very long sequence reads (averaging > 10,000 bases), lack of GC-bias, and high consensus accuracy. These features have allowed the method to provide a new gold standard in de novo genome assemblies, producing highly contiguous (contig N50 > 1 Mb) and accurate (> QV 50) genome assemblies. We will briefly describe the technology and then highlight the full workflow, from sample preparation through sequencing to data analysis, on examples of insect genome assemblies, and illustrate the difference these high-quality genomes represent with regard to biological insights, compared to fragmented draft assemblies generated by short-read sequencing.
In this podcast Sarah Tishkoff discusses what led her to study African genetics, and why she believes there is a need for more diversity in our genomic databases, with a particular emphasis on structural variation.
In this PAG 2018 presentation, John Williams of University of Adelaide, presents research on using PacBio SMRT Sequencing to explore the genetic origins of cattle subspecies, Angus (Bos taurus taurus) and Brahman (Bos taurus indicus). He shares RNA sequencing data using the PacBio Iso-Seq method to compare transcriptomes and phase allelic expression and describes how the IsoPhase technique enables evaluation of SNPs through transcriptome mapping back to the single genome of a cross-bred individual. Using a genomic and transcriptomic approach, two high-quality genomes from a single individual and gene isoforms specific to each subspecies are being identified.
This video provides an overview of the techniques and steps of generating a de novo genome assembly with long-read sequencing data generated using PacBio Single Molecule, Real-Time (SMRT) Sequencing. In this video, a PacBio scientist covers the benefits of long reads when generating high-quality genome assemblies, the latest tools for creating assemblies, including HGAP, FALCON and FALCON-Unzip, how to polish and assess the quality of a genome assembly, and how to submit an assembly to NCBI.
This webinar highlights global initiatives currently underway to use Single Molecule, Real-Time (SMRT) Sequencing to de novo assemble genomes of individuals representing multiple ethnic populations, thereby extending the diversity of available human reference genomes. In their presentations, Tina Graves-Lindsay from Washington University and Adam Ameur from Uppsala University spoke about diploid assemblies, discovering novel sequence and improving diversity of the current human reference genome. Finally, Paul Peluso of PacBio presented data from the recent effort to sequence a Puerto Rican genome and shared a SMRT Sequencing technology roadmap showing the next several upgrades for the Sequel System.
The Iso-Seq method enables the sequencing of transcript isoforms from the 5’ end to their poly-A tails, eliminating the need for transcript reconstruction and inference. This webinar provides a comprehensive guide to Iso-Seq method data analysis, bioinformatics, and review key applications.
In this PacBio User Group Meeting presentation, Tim Smith of the USDA’s Agricultural Research Service describes efforts to generate reference-grade genome assemblies for various bovine species and analyze them to understand factors such as how selective breeding has affected certain breeds. Genome assemblies he presents span cattle, water buffalo, and gaur. Smith shows data for each assembly, noting that as data production shifted to the Sequel System, long-read PacBio data became even better at producing highly contiguous assemblies.
This video provides an overview of the techniques and steps of preparing samples, DNA, and libraries for PacBio Single Molecule, Real-Time (SMRT) Sequencing to be used in de novo assembly projects. In this video, a PacBio scientist covers how to assess DNA quantity and purity, size-selection of DNA libraries, and provides and introduction to SMRT Sequencing, including the benefits of long-reads when generating high-quality genome assemblies.
In this PacBio User Group Meeting presentation, PacBio scientist Meredith Ashby shared several examples of analysis — from full-length 16S sequencing to shotgun sequencing — showing how SMRT Sequencing enables accurate representation for metagenomics and microbiome characterization, in some cases even without fully assembling genomes. New updates will provide users with a dedicated microbial assembly pipeline, optimized for all classes of bacteria, as well as increased multiplexing on the Sequel II System, now with 48 validated barcoded adapters. That throughput could reduce the cost of microbial analysis substantially.
In this talk at PAG 2020, PacBio Plant and Animal Sciences Marketing Manager Michelle Vierra discusses recent updates to Single Molecule, Real-Time (SMRT) Sequencing technology, including the Sequel II System, updated protocols for low-input as well as other upcoming developments.
Understanding interactions among plants and the complex communities of organisms living on, in and around them requires more than one experimental approach. A new method for de novo metagenome assembly, PacBio HiFi sequencing, has unique strengths for determining the functional capacity of metagenomes. With HiFi sequencing, the accuracy and median read length of unassembled data outperforms the quality metrics for many existing assemblies generated with other technologies, enabling cost-competitive recovery of full-length genes and operons even from rare species. When paired with the ability to close the genomes of even challenging isolates like Xanthomonas, the PacBio Sequel II System is…
In this webinar, Kristin Mars, Sequencing Specialist, PacBio, presents an introduction to PacBio’s technology and its applications followed by a panel discussion among sequencing experts. The panel discussion addresses such things as what long reads are and how are they useful, what differentiates PacBio long-read sequencing from other technologies, and the applications PacBio offers and how they can benefit scientific research.
In this webinar we present Single Molecule, Real-Time (SMRT) Sequencing and the Iso-Seq method, which allow you to generate full-length cDNA sequences — no assembly required — to characterize transcript isoforms within targeted genes or across an entire transcriptome. The presenters share how the Iso-Seq method: (1) Provides high quality, full-length transcript sequences of up to 15 kb; (2) Allows for one-day library prep on a single SMRT Cell 8M to comprehensively characterize a whole transcriptome; (3) Facilitates discovery of alternative splicing events, fusion gene detection, and allelic specific isoform detection; and (4) Enables discovery of potential cancer-specific isoforms in…
In this LabRoots webinar, Jonas Korlach the CSO of PacBio provides an introduction to PacBio HiFi sequence reads, which are both long (up to 25 kb currently) and accurate (>99%) at the individual single-molecule sequence read level andhave allowed for advances in de novo genome assemblies. Korlach reviews the characteristics of HiFi read data obtained with the Sequel II System, followed by examples of high-quality genome assemblies for human, plant and animal genomes including the different aspects of evaluating genome assemblies (contiguity, accuracy, completeness and allelic phasing) and illustrates their high quality by examples of resolving centromeres, telomeres, segmental duplications…