Abstract
The denV gene of bacteriophage T4 was fused to a Drosophila hsp70 (70-kDa heat shock protein) promoter and introduced into the germ line of Drosophila by P-element-mediated transformation. The protein product of that gene (endonuclease V) was detected in extracts of heat-shocked transformants with both enzymological and immunoblotting procedures. That protein restores both excision repair and UV resistance to mei-9 and mus201 mutants of this organism. These results reveal that the denV gene can compensate for excision-repair defects in two very different eukaryotic mutants, in that the mus201 mutants are typical of excision-deficient mutants in other organisms, whereas the mei-9 mutants exhibit a broad pleiotropism that includes a strong meiotic deficiency. This study permits an extension of the molecular analysis of DNA repair to the germ line of higher eukaryotes. It also provides a model system for future investigations of other well-characterized microbial repair genes on DNA damage in the germ line of this metazoan organism.
MeSH Terms
Animals
Blotting, Western
Cloning, Molecular
DNA/biosynthesis
DNA Glycosylases
DNA Repair
DNA Restriction Enzymes
DNA, Recombinant
Deoxyribonuclease (Pyrimidine Dimer)
Drosophila melanogaster/genetics
Endodeoxyribonucleases/genetics
Gene Expression Regulation
Genes, Viral
Germ Cells
Heat-Shock Proteins/genetics
Mutation
N-Glycosyl Hydrolases/metabolism
Plasmids
Promoter Regions, Genetic
T-Phages/genetics
Transformation, Genetic
Chemicals
DNA, Recombinant
Heat-Shock Proteins
DNA
Endodeoxyribonucleases
DNA Restriction Enzymes
Deoxyribonuclease (Pyrimidine Dimer)
DNA Glycosylases
N-Glycosyl Hydrolases
deoxyribopyrimidine endonucleosidase
Authors & Affiliations
6 authors, click to expand affiliations / ORCID
Banga S S
Department of Genetics, University of California, Davis 95616.
Boyd J B
Valerie K
Harris P V
Kurz E M
de Riel J K
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