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Nucleic Acids Research, 2001, Vol. 29, No. 13 e63
© 2001 Oxford University Press

yMGV: a database for visualization and data mining of published genome-wide yeast expression data

Philippe Marc*, Frédéric Devaux and Claude Jacq

Laboratoire de Génétique Moléculaire, CNRS 8541, Ecole Normale Supérieure, 46 Rue d’Ulm, 75005 Paris, France

The yeast Microarray Global Viewer (yMGV) is an on-line database providing a synthetic view of the transcriptional expression profiles of Saccharomyces cerevisiae genes in most of the published expression datasets. yMGV displays a one-screen graphical representation of gene expression variations for each published genome-wide experiment, allowing quick retrieval of experimental conditions affecting expression of this gene. yMGV also provides tools to isolate groups of genes sharing similar transcription profiles in a defined subset of experiments. Additionally, yMGV furnishes a set of statistical tools for critical assessment of published data. We therefore believe that yMGV is an efficient tool that affords a quick and comprehensive overview of microarray data and generates new gene classifications. As of 20 March 2001 the yMGV database contains 6 000 000 measurements, representing genome-wide expression comparisons of 932 experiments from 39 microarray publications. The yMGV interface is available at http://transcriptome.ens.fr/ymgv/.

* To whom correspondence should be addressed. Tel: +33 1 44 32 35 46; Fax: +33 1 44 32 37 30; Email: pmarc{at}biologie.ens.fr


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