title: Transcriptional units of GAL genes in Saccharomyces cerevisiae determined by ultraviolet light mapping.
abstract: The size of the transcriptional unit of the structural genes for three galactose-metabolizing enzymes which form a cluster on chromosome II in Saccharomyces cerevisiae was studied by the ultraviolet light (UV)-mapping technique. Thus the size of the primary transcripts of GAL7 for galactose-1-phosphate uridylyl transferase, GAL10 for uridine diphosphoglucose 4-epimerase, or GAL1 for galactokinase were estimated to be 0.81 x 10(6), 1.1 x 10(6), or 1.3 x 10(6) respectively. In the light of these data together with the known directions of transcription of the genes, we concluded that each of three genes was transcribed from its own promoter.
authors.affiliation: Research Unit for Molecular Genetics, Keio University School of Medicine, 35, Shinanomachi Shinjuku, Tokyo, Japan 160.
authors.forename: T
authors.initials: T
authors.lastname: Segawa
authors.forename: T
authors.initials: T
authors.lastname: Fukasawa