Project description:The aim of this study was to gain insight into the ribosome occupancy on different genes and codons in Zpr1-depleted cells vs. WT Zpr1 cells
Project description:The aim of this study was to gain insight into the temporal dynamics of the transcriptome on depletion of the essntial eukaryotic gene ZPR1 in S.cerevisiae.
Project description:The aim of this study was to gain insight into the ribosome occupancy on different genes and codons in AIM29 KO cells vs. wild-type cells
Project description:We used ribosome profiling to evaluate viral and cellular translation in RPLP1/2-depleted cells. This revealed that ribosomes pause in the sequence coding for the N-terminus of the envelope protein, immediately downstream of sequences encoding two adjacent transmembrane domains (TMDs). RPLP1/2 function to enhance ribosome elongation at this position and increase viral protein stability, possibly by improving co-translational folding of DENV proteins. We also analyzed the effects of RPLP1/2 depletion on cellular translation. We find that RPLP1/2 moderately affects ribosome density for a small subset of cellular mRNAs. However, meta-analysis of ribosome positions on all cellular mRNAs revealed slightly increased accumulation of ribosomes downstream of start codons in RPLP1/2-depleted cells, suggesting that RPLP1/2 enhance elongation efficiency. Importantly, we found that ribosome density on mRNAs encoding multiple TMDs was disproportionately affected by RPLP1/2 knockdown, suggesting a role for RPLP1/2 in transmembrane protein biogenesis. Together, our findings reveal insights into the function of RPLP1/2 in DENV and cellular translation.