Differential coding potential of ADAM22 mRNAs
Copyright policy )Differential coding potential of ADAM22 mRNAs
ADAM22 is one of three catalytically inactive ADAM family members highly expressed in the brain. Preliminary functional studies suggest possible roles in epilepsy and myelination. We report an additional eight new splice variants of human ADAM22. Analysis of the altered splicing patterns of ADAM22 mRNAs in glioma allows us to suggest alternate splicing patterns in normal brain compared to glioma may represent differential use of exon 32. We also report diversity in the 5' leader sequences of ADAM22 mRNAs as a consequence of alternate transcriptional initiation sites. ADAM22 has an additional transcriptional initiation element producing transcripts lacking the exon 1 sequence including the signal peptide. Variable transcriptional initiation in exon 1 produces a range of ADAM22 5' leader sequence lengths, all of which are significantly longer than those described in NCBI reference sequences. Longer 5' leader sequences contain a second upstream AUG codon which acts to inhibit ADAM22 translation.
- University of Melbourne Australia
- Royal Melbourne Hospital Australia
Expressed Sequence Tags, Brain, Nerve Tissue Proteins, Exons, Glioma, Kidney, Polymerase Chain Reaction, Cell Line, ADAM Proteins, Alternative Splicing, Open Reading Frames, Genes, Reporter, Cell Line, Tumor, Codon, Terminator, Humans, Protein Isoforms, Codon, Luciferases, DNA Primers, Neoplasm Staging
Expressed Sequence Tags, Brain, Nerve Tissue Proteins, Exons, Glioma, Kidney, Polymerase Chain Reaction, Cell Line, ADAM Proteins, Alternative Splicing, Open Reading Frames, Genes, Reporter, Cell Line, Tumor, Codon, Terminator, Humans, Protein Isoforms, Codon, Luciferases, DNA Primers, Neoplasm Staging
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