title: Localization of the squalene epoxidase gene (SQLE) to human chromosome region 8q24.1.
abstract: Squalene epoxidase (EC 1.14.99.7) catalyzes the first oxygenation step in sterol biosynthesis and is suggested to be one of the rate-limiting enzymes in this pathway. We previously isolated the mammalian squalene epoxidase cDNAs and demonstrated the transcriptional regulation of human squalene epoxidase by sterols and inhibitors. The present study was undertaken to determine the chromosomal mapping of the human squalene epoxidase gene (SQLE). PCR evidence localizes human SQLE to chromosome 8 by using the NIGMS (National Institute of General Medical Sciences) Human/Rodent Somatic Cell Hybrid Mapping Panel 2 as template. To refine the localization of human SQLE further, PCR on the Stanford G3 Radiation Hybrid Panel was performed. The result shows that human SQLE is most tightly linked to D8S508, which is reported to be located at 8q24.13-qter (lod score 7.87). Moreover, fluorescence in situ hybridization also maps human SQLE to 8q24.1.
authors.affiliation: Department of Biochemistry, Niigata University School of Medicine, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Nagai
authors.forename: J
authors.initials: J
authors.lastname: Sakakibara
authors.forename: K
authors.initials: K
authors.lastname: Wakui
authors.forename: Y
authors.initials: Y
authors.lastname: Fukushima
authors.forename: S
authors.initials: S
authors.lastname: Igarashi
authors.forename: S
authors.initials: S
authors.lastname: Tsuji
authors.forename: M
authors.initials: M
authors.lastname: Arakawa
authors.forename: T
authors.initials: T
authors.lastname: Ono
mesh_terms: D002874:Chromosome Mapping; D002898:Chromosomes, Human, Pair 8 / Q000235:genetics*; D017931:DNA Primers; D004587:Electrophoresis, Agar Gel; D008040:Genetic Linkage; D005819:Genetic Markers; D006801:Humans; D006822:Hybrid Cells; D017404:In Situ Hybridization, Fluorescence; D008214:Lymphocytes / Q000201:enzymology; D008969:Molecular Sequence Data; D010105:Oxygenases / Q000235:genetics*; D016133:Polymerase Chain Reaction; D050603:Squalene Monooxygenase
chemical_list: D017931:DNA Primers; D005819:Genetic Markers; D010105:Oxygenases; D050603:Squalene Monooxygenase