Identification of a differentially expressed RNA helicase by gene trapping

Biochem Biophys Res Commun. 1999 Sep 7;262(3):677-84. doi: 10.1006/bbrc.1999.1208.


A mouse line was generated that expressed a gene trap reporter construct, betageo, in a dynamic pattern during embryonic development. Differential expression was seen within the developing eyes, limbs, heart, neural tube, and skeleton. Two transcripts were cloned that contained endogenous sequences fused to the gene trap vector sequence. Analysis of the endogenous sequences revealed that the reporter integrated within a gene belonging to a small group of eukaryotic superfamily I helicases. Unexpectedly, the majority of transcripts produced from the trapped locus were not affected by the insertion of the reporter. Although the function of the trapped helicase gene is unknown, its complex transcription patterns and widespread spatial-temporal distribution suggest that the gene product plays a role in RNA metabolism in multiple tissues and organs within the developing embryo.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Amino Acid Sequence
  • Animals
  • Base Sequence
  • Bone and Bones / embryology
  • Bone and Bones / enzymology
  • Brain / enzymology
  • Cell Line
  • Cloning, Molecular
  • Conserved Sequence
  • Embryonic and Fetal Development
  • Gene Expression Regulation, Developmental
  • Gene Expression Regulation, Enzymologic*
  • Genes, Reporter
  • Genetic Techniques*
  • Humans
  • Mesoderm / enzymology
  • Mesoderm / physiology
  • Mice
  • Molecular Sequence Data
  • Mutation
  • Open Reading Frames
  • RNA Helicases / chemistry
  • RNA Helicases / genetics*
  • RNA Helicases / metabolism*
  • Recombinant Fusion Proteins / biosynthesis
  • Recombinant Fusion Proteins / metabolism
  • Sequence Alignment
  • Sequence Homology, Amino Acid
  • Transcription, Genetic
  • Transfection
  • beta-Galactosidase / genetics


  • Recombinant Fusion Proteins
  • beta-Galactosidase
  • RNA Helicases