The mub gene encodes a protein containing three KH domains and is expressed in the mushroom bodies of Drosophila melanogaster

Gene. 1998 Jul 17;215(1):191-201. doi: 10.1016/s0378-1119(98)00251-0.


The ring gland function of Drosophila melanogaster is controlled by the CNS. To identify genes that are active in brain cells and are involved in the ring gland control, we analysed enhancer trap lines with respect to CNS- and/or ring gland-specific lacZ expression in third-instar larvae. From one of the enhancer trap lines, which shows specific lacZ expression in the CNS and prothoracic part of the ring gland, the mub gene was cloned. The gene is strongly expressed in the mushroom bodies throughout development. Nucleotide sequence analysis of cDNA clones revealed a high degree of similarity to vertebrate RNA binding KH domain proteins, suggesting a function of the MUB protein in binding and stabilizing of specific mRNAs in the mushroom bodies. Null mutants of the mub gene do not exhibit a visible mutant phenotype. We speculate, therefore, that the mub gene is involved in learning and memory processes.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amino Acid Sequence
  • Animals
  • Base Sequence
  • Binding Sites / genetics
  • Brain / cytology
  • Brain / embryology
  • Brain / metabolism
  • Cloning, Molecular
  • DNA, Complementary / chemistry
  • DNA, Complementary / genetics
  • DNA-Binding Proteins / genetics*
  • Drosophila melanogaster / chemistry
  • Drosophila melanogaster / embryology
  • Drosophila melanogaster / genetics*
  • Enhancer Elements, Genetic
  • Female
  • Ganglia, Invertebrate / chemistry
  • Ganglia, Invertebrate / embryology
  • Ganglia, Invertebrate / metabolism*
  • Gene Expression / genetics
  • Gene Expression Regulation, Developmental
  • Genes, Insect / genetics*
  • Insect Proteins / chemistry
  • Insect Proteins / genetics*
  • Male
  • Molecular Sequence Data
  • Mutation / genetics
  • Protein Structure, Tertiary
  • RNA / analysis
  • RNA / genetics
  • RNA-Binding Proteins / genetics*
  • Sequence Analysis, DNA
  • Sequence Homology, Amino Acid
  • Tissue Distribution
  • Transformation, Genetic / genetics
  • Viral Proteins / genetics*
  • beta-Galactosidase / analysis
  • beta-Galactosidase / genetics


  • DNA, Complementary
  • DNA-Binding Proteins
  • Insect Proteins
  • MuB protein, Enterobacteria phage Mu
  • RNA-Binding Proteins
  • Viral Proteins
  • RNA
  • beta-Galactosidase