Project description:The exon junction complex (EJC) is composed of three core proteins Rbm8a, Magoh and Eif4a3 and is thought to play a role in several post-transcriptional processes. In this study we focus on understanding the role of EJC in zebrafish development. We identified transcriptome-wide binding sites of EJC in zebrafish via RNA:protein immunoprecipitation followed by deep sequencing (RIP-Seq). We find that, as in human cells, zebrafish EJC is deposited about 24 nts upstream of exon-exon junctions. We also identify transcripts regulated by Rbm8a and Magoh in zebrafish embryos using whole embryo RNA-seq from rbm8a mutant, magoh mutant and wild-type sibling embryos. This study shows that nonsense mediated mRNA decay is dysregulated in zebrafish EJC mutants.
Project description:Transcriptional profiling performed from total eye RNA extracts of wildtype control fishes versus Prpf31 morpholino injected larvae (at ~72hpf) two-condition experiment: wildtype zebrafish versus MO-Prpf31 injected zebrafish eye RNA; 6 replicates each (extraction from 6 pools (~200 eyes each) of controls and 6 pools MO-Prpf31 (~200 eyes each))
