Encyclopedia of Metagenomics

2015 Edition
| Editors: Karen E. Nelson


  • Alice C. McHardy
Reference work entry
DOI: https://doi.org/10.1007/978-1-4899-7478-5_736


PhyloPythia and its successor PhyloPythiaS are fast and accurate oligomer signature-based classifiers for the taxonomic assignment of metagenome sequence fragments.


Metagenomics uses random shotgun sequencing to recover genome sequence information from microbial communities without the need for cultivation of its member species. It thus gives access to the vast portion of the microbial world that cannot be cultured with standard techniques (Hugenholtz 2002). The sequencing of randomly sheared microbial community DNA initially generates a collection of short sequence fragments called reads. Depending on the sequencing technology used, the amount of generated data and read lengths vary (Metzker 2010; Droge and McHardy 2012): while traditional Sanger sequencing generates reads of around 800 bp, the commercially available “next-generation” sequencing technologies return reads of approximately 50–75 bp (SOLID sequencing by Applied Biosciences/Life Technologies),...

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.Algorithmic BioinformaticsHeinrich Heine University DüsseldorfDüsseldorfGermany