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2021年06月01日

Best practices for whole-genome de novo sequencing with long-read SMRT Sequencing.

Author(s): Rank, David and Gleitsman, Kristin and Jian, Wenlong and Kim, Kristi Spittle and Sisneros, Nick and Wilson, Joan and Badgett, Marty and Peluso, Paul

With the introduction of P6-C4 chemistry, PacBio has made significant strides with Single Molecule, Real-Time (SMRT) Sequencing . Read lengths averaging between 10 and 15 kb can be now be achieved with extreme reads in the distribution of > 60 kb. The chemistry attains a consensus accuracy of 99.999% (QV50) at 30x coverage which coupled with an increased throughput from the PacBio RS II platform (500 Mb – 1 Gb per SMRT Cell) makes larger genome projects more tractable. These combined advancements in technology deliver results that rival the quality of Sanger “clone-by-clone” sequencing efforts; resulting in closed microbial genomes and highly contiguous de novo assembly of complex eukaryotes on multi-Gbase scale using SMRT Sequencing as the standalone technology. We present here the guidelines and best practices to achieve optimal results when employing PacBio-only whole genome shotgun sequencing strategies. Specific sequencing examples for plant and animal genomes are discussed with SMRTbell library preparation and purification methods for obtaining long insert libraries to generate optimal sequencing results. The benefits of long reads are demonstrated by the highly contiguous assemblies yielding contig N50s of over 5 Mb compared to similar assemblies using next-generation short-read approaches. Finally, guidelines will be presented for planning out projects for the de novo assembly of large genomes.

Organization: PacBio
Year: 2015

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