title: Molecular cloning of the UMP synthase gene rudimentary-like from Drosophila melanogaster.
abstract: The rudimentary-like locus encodes UMP synthase, a bienzyme protein containing the last two enzyme activities of de novo pyrimidine biosynthesis: orotate phosphoribosyltransferase and orotidylate decarboxylase. This locus lies within chromosome region 93B. New mutations have been used to refine the 93B cytogenetic map and a chromosome walk has been executed to clone DNA from this region. DNA encoding UMP synthase was identified using mixed oligonucleotides which were based on sequences derived from conserved peptide tracts of the protein in other species. cDNA clones of the embryonic UMP synthase mRNA have been isolated and used to define the extent of genomic DNA sequences which encode the transcript. The embryonic RNA is approximately 1.75 kb in length.
authors.affiliation: T.H. Morgan School of Biological Sciences, University of Kentucky, Lexington 40506.
authors.forename: M
authors.initials: M
authors.lastname: Eisenberg
authors.forename: K
authors.initials: K
authors.lastname: Gathy
authors.forename: T
authors.initials: T
authors.lastname: Vincent
authors.forename: J
authors.initials: J
authors.lastname: Rawls
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D002875:Chromosomes; D003001:Cloning, Molecular; D004247:DNA / Q000235:genetics / Q000302:isolation & purification; D004331:Drosophila melanogaster / Q000235:genetics*; D005816:Genetic Complementation Test; D006801:Humans; D008969:Molecular Sequence Data; D009097:Multienzyme Complexes / Q000235:genetics*; D009962:Orotate Phosphoribosyltransferase / Q000235:genetics*; D009964:Orotidine-5'-Phosphate Decarboxylase / Q000235:genetics*; D015183:Restriction Mapping; D012689:Sequence Homology, Nucleic Acid; D014158:Transcription, Genetic
chemical_list: D009097:Multienzyme Complexes; C027157:uridine 5'-monophosphate synthase; D004247:DNA; D009962:Orotate Phosphoribosyltransferase; D009964:Orotidine-5'-Phosphate Decarboxylase