title: Expression profiling of the bottom fermenting yeast Saccharomyces pastorianus orthologous genes using oligonucleotide microarrays.
abstract: The bottom fermenting yeast Saccharomyces pastorianus is reported to have arisen as a natural hybrid of two yeast strains, S. cerevisiae and S. bayanus. The S. pastorianus genome includes S. cerevisiae-type (Sc-type) genes and orthologous lager-fermenting-yeast specific-type (Lg-type) genes derived from S. cerevisiae and S. bayanus, respectively. To gain insights into the physiological properties of S. pastorianus, we developed an in situ synthesized 60-mer oligonucleotide microarray for gene expression monitoring of these orthologous genes, consisting of approximately 6600 Sc-type genes and 3200 Lg-type genes. A comparison of the transcriptional profile of orthologous genes (e.g. Sc-type and Lg-type genes) in S. cerevisiae or S. bayanus demonstrated the feasibility of performing gene expression studies with this microarray. Genome-wide analysis of S. pastorianus with this microarray could clearly distinguish more than 67% of the expressed orthologous genes. Furthermore, it was shown that the gene expression of particular Lg-type genes differed from that of the orthologous Sc-type genes, suggesting that some Lg-type and Sc-type genes may have different functional roles. We conclude that the oligonucleotide microarray that we constructed is a powerful tool for the monitoring of gene expression of the orthologous genes of S. pastorianus.
authors.affiliation: Central Laboratories for Frontier Technology, Kirin Holdings Co Ltd, Yokohama-shi, Kanagawa, Japan.
authors.forename: Toshiko
authors.initials: T
authors.lastname: Minato
authors.forename: Satoshi
authors.initials: S
authors.lastname: Yoshida
authors.forename: Tatsuji
authors.initials: T
authors.lastname: Ishiguro
authors.forename: Emiko
authors.initials: E
authors.lastname: Shimada
authors.forename: Satoru
authors.initials: S
authors.lastname: Mizutani
authors.forename: Osamu
authors.initials: O
authors.lastname: Kobayashi
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Yoshimoto
mesh_terms: D001515:Beer / Q000382:microbiology*; D004271:DNA, Fungal / Q000032:analysis; D005285:Fermentation; D005656:Fungal Proteins / Q000235:genetics* / Q000378:metabolism; D020869:Gene Expression Profiling; D015966:Gene Expression Regulation, Fungal; D020411:Oligonucleotide Array Sequence Analysis / Q000379:methods*; D015345:Oligonucleotide Probes; D020133:Reverse Transcriptase Polymerase Chain Reaction; D012440:Saccharomyces / Q000145:classification / Q000235:genetics / Q000254:growth & development / Q000378:metabolism*; D012441:Saccharomyces cerevisiae / Q000235:genetics / Q000254:growth & development / Q000378:metabolism*; D029701:Saccharomyces cerevisiae Proteins / Q000235:genetics / Q000378:metabolism
chemical_list: D004271:DNA, Fungal; D005656:Fungal Proteins; D015345:Oligonucleotide Probes; D029701:Saccharomyces cerevisiae Proteins