Conservation of gene organization and trans-splicing in the glyceraldehyde-3-phosphate dehydrogenase-encoding genes of Caenorhabditis briggsae. Academic Article uri icon

Overview

abstract

  • The genes encoding body-wall-specific glyceraldehyde-3-phosphate dehydrogenase from Caenorhabditis briggsae were sequenced and compared to the homologous genes from Caenorhabditis elegans. The direct tandem organization of these genes, gpd-2 and gpd-3, and the size and location of the two introns in each gene are the same in C. elegans and C. briggsae. Primer-extension studies demonstrated that the two genes in C. briggsae are trans-splice differentially with the same splice leader (SL) RNAs as are observed in C. elegans. The gdp-2 gene is trans-spliced with SL1 while gdp-3 is trans-spliced with SL2. Significant sequence conservation was observed within the promoter regions of each species and may indicate those regions responsible for body-wall-muscle-specific gene expression and/or differential trans-splicing. Comparisons of the sequences suggest that the tandem repeat of the genes has been subjected to concerted evolution and that C. briggsae and C. elegans diverged much earlier than would be anticipated based on morphological similarities alone. Finally, an open reading frame found several hundred nucleotides upstream from gpd-2, in both species, appears to be homologous to the ATP synthase subunit, ATPase inhibitor protein, from bovine mitochondria.

publication date

  • November 16, 1992

Research

keywords

  • Caenorhabditis
  • Genes, Helminth
  • Glyceraldehyde-3-Phosphate Dehydrogenases
  • RNA Splicing

Identity

Scopus Document Identifier

  • 0026468322

Digital Object Identifier (DOI)

  • 10.1016/0378-1119(92)90126-a

PubMed ID

  • 1446820

Additional Document Info

volume

  • 121

issue

  • 2