The effects of six recessive visible Notch mutations on the activities of four enzymes of the mitochondrial respiratory chain are described. Their effects in hemizygous condition in males are similar to those of the recessive lethal Notch mutations in heterozygous condition. This explains their viab
The action of the Notch locus in Drosophila melanogaster
✍ Scribed by Thörig, G. E. W. ;Heinstra, P. W. H. ;Scharloo, W.
- Publisher
- Springer
- Year
- 1981
- Tongue
- English
- Weight
- 705 KB
- Volume
- 182
- Category
- Article
- ISSN
- 0026-8925
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✦ Synopsis
It is shown that the Notch 8 deficiency in Drosophila melanogaster affects a number of enzyme activities localized in the mitochondria, such as NADH oxidase (activity of the complete respiratory chain), NADH dehydrogenase (the first step in the respiratory chain before transfer to ubiquinone), Succinate dehydrogenase and ~-Glycerophosphate dehydrogenase. The experiments reported here do not exclude the possibility of involvement of other genes in the deficiency. The effect of duplications of the Notch locus on NADH oxidase and NADH dehydrogenase suggest that this locus determines the enzyme activities.
The dosage effects of the Notch locus on activity suggest that this locus contains the structural genes for these enzymes.
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