title: Functional analysis of 1440 Escherichia coli genes using the combination of knock-out library and phenotype microarrays.
abstract: Escherichia coli is one of the best elucidated organisms. However, about 40% of E. coli genes have not been assigned to their function yet. We analyzed 1440 single gene knock-out mutants using the GN2-MicroPlate, which permits assay of 95 carbon-source utilizations simultaneously. In the knock-out library there are 1044 of so called y-genes with no apparent function. The raw dataset was analyzed and genes were interrelated by the clustering method of the GeneSpring software. In the resulted dendrogram of genes, a group of genes with known and related function tended to be assembled into a cluster. Our clustering method would be useful for functional assignment of so called y-genes with no apparent function, since the resulted dendrogram could connect y-genes to phenotype and function of well-studied genes.
authors.affiliation: Biofrontier Laboratories, Kyowa Hakko Kogyo Co. Ltd., Tokyo 194-8533, Japan.
authors.forename: Mikito
authors.initials: M
authors.lastname: Ito
authors.forename: Tomoya
authors.initials: T
authors.lastname: Baba
authors.forename: Hirotada
authors.initials: H
authors.lastname: Mori
authors.forename: Hideo
authors.initials: H
authors.lastname: Mori
mesh_terms: D004926:Escherichia coli / Q000235:genetics*; D017353:Gene Deletion; D020869:Gene Expression Profiling; D015964:Gene Expression Regulation, Bacterial / Q000235:genetics; D005798:Genes, Bacterial / Q000235:genetics*; D020411:Oligonucleotide Array Sequence Analysis / Q000379:methods; D010641:Phenotype; D012984:Software