title: The isolation, localization and characterization of the QM homolog in Drosophila melanogaster.
abstract: A fragment of 443 bp was amplified from a lambda ZAPII Drosophila central nervous system (CNS) cDNA library using minimally degenerate primers to very conserved regions of the QM gene. This fragment was used as a probe to screen the lambda ZAPII Drosophila CNS cDNA library. Two clones of the Drosophila QM homolog (pDQM-7A1 and pDQM-2B1), each containing the complete coding region, were isolated. The 5'-UTR of this gene was obtained by RACE PCR and ligated to the coding sequence to produce a the full-length copy of the Drosophila QM homolog (DQM) cDNA. The DQM cDNA measures 746 nucleotides in length and encodes a polypeptide of 218 residues. The amino acid sequence shows 76.1 percent identity with human QM and 69.1 percent identity with QSR1, the yeast homolog of QM. Unlike the human or mouse genome which contains multiple copies of the QM gene, the Drosophila genome has only a single copy as indicated by genomic Southern blot analysis. In situ hybridization confirms the presence of a single copy of DQM in the Drosophila genome and localizes it to the left arm of the third chromosome at the end of region 80A (80A-4).
authors.affiliation: Department of Microbiology and Molecular Genetics, School of Medicine, University of California, Irvine 92697, USA.
authors.forename: Y H
authors.initials: YH
authors.lastname: Nguyen-Yue
authors.forename: T M
authors.initials: TM
authors.lastname: Loftus
authors.forename: T
authors.initials: T
authors.lastname: Torok
authors.forename: P
authors.initials: P
authors.lastname: Bryant
authors.forename: E J
authors.initials: EJ
authors.lastname: Stanbridge
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D015139:Blotting, Southern; D002352:Carrier Proteins / Q000235:genetics*; D002490:Central Nervous System / Q000502:physiology; D002874:Chromosome Mapping; D003001:Cloning, Molecular; D004251:DNA Transposable Elements; D018076:DNA, Complementary / Q000302:isolation & purification; D004331:Drosophila melanogaster / Q000235:genetics*; D005656:Fungal Proteins / Q000235:genetics; D006801:Humans; D008969:Molecular Sequence Data; D000080882:Ribosomal Protein L10; D012269:Ribosomal Proteins; D029701:Saccharomyces cerevisiae Proteins; D017421:Sequence Analysis; D017386:Sequence Homology, Amino Acid
chemical_list: D002352:Carrier Proteins; D004251:DNA Transposable Elements; D018076:DNA, Complementary; D005656:Fungal Proteins; C093333:RPL10 protein, S cerevisiae; C000630686:RPL10 protein, human; D012269:Ribosomal Proteins; C000630690:Rpl10 protein, mouse; D029701:Saccharomyces cerevisiae Proteins