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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Transcriptional organization of a Drosophila glutamic acid decarboxylase gene.

We previously described the sequence and expression pattern of a Drosophila mRMA ( Gad) that encodes the major soluble form of glutamic acid decarboxylase (GAD). We now report the transcriptional organization of the Drosophila Gad gene. Based on a combination of DNA sequence, RNase protection, primer extension, and polymerase chain reaction analyses, we conclude that the transcription unit for a 3.1-kb Gad mRNA is composed of eight exons that span approximately 17-kb genomic interval. By this analysis, the site of Gad transcript initiation overlaps with a recognition sequence that confers binding of the zeste transcription factor to other promoter elements. We emphasize that our analysis of the Gad transcription unit provides no evidence for alternative RNA splicing as a mechanism for the generation of GAD isoforms. Thus, the several GAD-immunoreactive proteins (putative GAD isoforms) that can be detected in Drosophila extracts are probably encoded by distinct genes.[1]

References

  1. Transcriptional organization of a Drosophila glutamic acid decarboxylase gene. Newby, L.M., Kulkarni, S.J., Jackson, F.R. J. Neurochem. (1993) [Pubmed]
 
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