Created: 2007-11-23 16:42:24      Last updated: 2008-04-29 10:37:12

Phylogenomic workflow with SIFTER.

The workflow first runs an iterative Blast search against the RefSeq database (Pruitt et al. 2007) (only fully sequenced organisms) and filters the results to get putative orthologous and in-paralogous proteins. These sequences are used to build a multiple alignment with MAFFT (Katoh et al. 2005). After filtering out alignment columns with more than 60% gaps, a phylogenetic tree is build. If there are less than 20 proteins in the alignment Phyml (Guindon and Gascuel 2003), a maximum likelihood approach, is used. For more than 20 proteins BioNJ (Gascuel et al. 1997), a neighbour joining method, is applied to speed up the pipeline. FORESTER (Zmasek and Eddy 2001) is called to reconcile the tree with the species tree, thereby annotating duplication and speciation nodes. Finally SIFTER is run to transfer Gene Ontology (The Gene Ontology Consortium 2000) terms inside the phylogenetic tree.

Please use as inputs for organism the latin name with upper case letter in front:

e.g. Medicago truncatula


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1. B.E. Engelhardt, M.I. Jordan, K.E. Muratore, and S.E. Brenner, Protein molecular function prediction by Bayesian ph\ylogenomics, 07 October 2005

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