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Data mining tools for the Saccharomyces cerevisiae morphological database
1Department of Computer Science, Graduate School of Information Science and Technology, University of Tokyo 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan 2Department of Computational Biology, Graduate School of Frontier Sciences, University of Tokyo Building FSB-101, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8562, Japan 3Department of Integrated Biosciences, Graduate School of Frontier Sciences, University of Tokyo Building FSB-101, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8562, Japan 4Japan and Institute for Bioinformatics and Research and Development, Japan Science and Technology Corporation Science Plaza, 5-3, Yonbancho, Chiyoda-ku, Tokyo 102-8666, Japan
*To whom correspondence should be addressed. Tel: +81 4 7136 3985; Fax: +81 4 7136 3977; Email: moris{at}k.u-tokyo.ac.jp
Received February 14, 2005. Revised March 31, 2005. Accepted March 31, 2005.
For comprehensive understanding of precise morphological changes resulting from loss-of-function mutagenesis, a large collection of 1 899 247 cell images was assembled from 91 271 micrographs of 4782 budding yeast disruptants of non-lethal genes. All the cell images were processed computationally to measure
500 morphological parameters in individual mutants. We have recently made this morphological quantitative data available to the public through the Saccharomyces cerevisiae Morphological Database (SCMD). Inspecting the significance of morphological discrepancies between the wild type and the mutants is expected to provide clues to uncover genes that are relevant to the biological processes producing a particular morphology. To facilitate such intensive data mining, a suite of new software tools for visualizing parameter value distributions was developed to present mutants with significant changes in easily understandable forms. In addition, for a given group of mutants associated with a particular function, the system automatically identifies a combination of multiple morphological parameters that discriminates a mutant group from others significantly, thereby characterizing the function effectively. These data mining functions are available through the World Wide Web at http://scmd.gi.k.u-tokyo.ac.jp/.
The authors wish it to be known that, in their opinion, the first two authors should be regarded as joint First Authors
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