Published online by Cambridge University Press: 14 April 2009
The stimulation of in vitro tRNA aminoacylation by post-microsomal supernatant enzymes isolated from Abnormal Abdomen (A53g) adult flies is a function of the residual genome of these flies rather than of the major mutant gene, A53g. Genes controlling this stimulation are located on the X chromosome as well as on the autosomes. These observations are discussed in terms of the phenotypic effect of the major mutant gene in response to changes in protein synthesis which are under the control of modifier genes responsible for aberrant genetic translation mechanisms.