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The company's first scientific instrument, called the PacBio RS, was released to a limited set of customers in late 2010., with full commercial release in early 2011. [17] [8] Sequencing provider GATC Biotech was selected by Pacific Biosciences as its first European service provider in late 2010. [18]
The DNA sequencing is done on a chip that contains many ZMWs. Inside each ZMW, a single active DNA polymerase with a single molecule of single stranded DNA template is immobilized to the bottom through which light can penetrate and create a visualization chamber that allows monitoring of the activity of the DNA polymerase at a single molecule level.
Sequencing technologies vary in the length of reads produced. Reads of length 20-40 base pairs (bp) are referred to as ultra-short. [2] Typical sequencers produce read lengths in the range of 100-500 bp. [3] However, Pacific Biosciences platforms produce read lengths of approximately 1500 bp. [4] Read length is a factor which can affect the results of biological studies. [5]
The workflow of a typical hybrid genome assembly experiment using second- and third-generation sequencing technologies. Figure adapted from Wang et al., 2012 [14]. One hybrid approach to genome assembly involves supplementing short, accurate second-generation sequencing data (i.e. from IonTorrent, Illumina or Roche 454) with long less accurate third-generation sequencing data (i.e. from PacBio ...
Computational genomics refers to the use of computational and statistical analysis to decipher biology from genome sequences and related data, [1] including both DNA and RNA sequence as well as other "post-genomic" data (i.e., experimental data obtained with technologies that require the genome sequence, such as genomic DNA microarrays).
The application of massively parallel sequencing also greatly increases the amount of sequence data generated, which require high-throughput bioinformatic analysis pipelines. [90] The sequence-driven approach to screening is limited by the breadth and accuracy of gene functions present in public sequence databases.
Whole genome shotgun sequencing versus Hierarchical shotgun sequencing. One major use of genomic libraries is hierarchichal shotgun sequencing, which is also called top-down, map-based or clone-by-clone sequencing. This strategy was developed in the 1980s for sequencing whole genomes before high throughput techniques for sequencing were available.
The high demand for low-cost sequencing has driven the development of high-throughput sequencing technologies that parallelize the sequencing process, producing thousands or millions of sequences at once. [58] [59] High-throughput sequencing is intended to lower the cost of DNA sequencing beyond what is possible with standard dye-terminator ...