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We have recently developed ESTExplorer, a semi-automated computational workflow system, in order to achieve the rapid analysis of EST datasets. In this study, we evaluated EST data analysis for the parasitic nematode <jats:italic>Trichostrongylus vitrinus<\/jats:italic> (order Strongylida) using ESTExplorer, compared with database matching alone.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Results<\/jats:title>\n            <jats:p>We functionally annotated 1776 ESTs obtained <jats:italic>via<\/jats:italic> suppressive-subtractive hybridisation from <jats:italic>T. vitrinus<\/jats:italic>, an important parasitic trichostrongylid of small ruminants. Cluster and comparative genomic analyses of the transcripts using ESTExplorer indicated that 290 (41%) sequences had homologues in <jats:italic>Caenorhabditis elegans<\/jats:italic>, 329 (42%) in parasitic nematodes, 202 (28%) in organisms other than nematodes, and 218 (31%) had no significant match to any sequence in the current databases. Of the <jats:italic>C. elegans<\/jats:italic> homologues, 90 were associated with 'non-wildtype' double-stranded RNA interference (RNAi) phenotypes, including embryonic lethality, maternal sterility, sterile progeny, larval arrest and slow growth. We could functionally classify 267 (38%) sequences using the Gene Ontologies (GO) and establish pathway associations for 230 (33%) sequences using the Kyoto Encyclopedia of Genes and Genomes (KEGG). Further examination of this EST dataset revealed a number of signalling molecules, proteases, protease inhibitors, enzymes, ion channels and immune-related genes. In addition, we identified 40 putative secreted proteins that could represent potential candidates for developing novel anthelmintics or vaccines. We further compared the automated EST sequence annotations, using ESTExplorer, with database search results for individual <jats:italic>T. vitrinus<\/jats:italic> ESTs. ESTExplorer reliably and rapidly annotated 301 ESTs, with pathway and GO information, eliminating 60 low quality hits from database searches.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Conclusion<\/jats:title>\n            <jats:p>We evaluated the efficacy of ESTExplorer in analysing EST data, and demonstrate that computational tools can be used to accelerate the process of gene discovery in EST sequencing projects. The present study has elucidated sets of relatively conserved and potentially novel genes for biological investigation, and the annotated EST set provides further insight into the molecular biology of <jats:italic>T. vitrinus<\/jats:italic>, towards the identification of novel drug targets.<\/jats:p>\n          <\/jats:sec>","DOI":"10.1186\/1471-2105-9-s1-s10","type":"journal-article","created":{"date-parts":[[2008,2,13]],"date-time":"2008-02-13T19:14:02Z","timestamp":1202930042000},"update-policy":"http:\/\/dx.doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["In silico analysis of expressed sequence tags from Trichostrongylus vitrinus (Nematoda): comparison of the automated ESTExplorer workflow platform with conventional database searches"],"prefix":"10.1186","volume":"9","author":[{"given":"Shivashankar H","family":"Nagaraj","sequence":"first","affiliation":[]},{"given":"Robin B","family":"Gasser","sequence":"additional","affiliation":[]},{"given":"Alasdair J","family":"Nisbet","sequence":"additional","affiliation":[]},{"given":"Shoba","family":"Ranganathan","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2008,2,13]]},"reference":[{"key":"2554_CR1","first-page":"i","volume-title":"The phylogenetic systematics of free-living nematodes","author":"HM Platt","year":"1994","unstructured":"Platt HM: The phylogenetic systematics of free-living nematodes. 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