Extensive allele‐specific translational regulation in hybrid mice. Issue 8 (7th August 2015)

• Record Type: Journal Article
• Authors: Hou, Jingyi; Wang, Xi; McShane, Erik; Zauber, Henrik; Sun, Wei; Selbach, Matthias; Chen, Wei
• Is Part Of: Molecular systems biology. Volume 11:Issue 8(2015:Aug.)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2015-08-07
• Subjects: Molecular biology -- Periodicals; Systems biology -- Periodicals; 572.8
• DOI: 10.15252/msb.156240
• Languages: English
• ISSNs: 1744-4292

Abstract

<abstract abstract-type="main" id="msb156240-abs-0001"> <title>Abstract</title> <p>Translational regulation is mediated through the interaction between diffusible <italic>trans</italic>‐factors and <italic>cis</italic>‐elements residing within mRNA transcripts. In contrast to extensively studied transcriptional regulation, <italic>cis</italic>‐regulation on translation remains underexplored. Using deep sequencing‐based transcriptome and polysome profiling, we globally profiled allele‐specific translational efficiency for the first time in an F1 hybrid mouse. Out of 7, 156 genes with reliable quantification of both alleles, we found 1, 008 (14.1%) exhibiting significant allelic divergence in translational efficiency. Systematic analysis of sequence features of the genes with biased allelic translation revealed that local RNA secondary structure surrounding the start codon and proximal out‐of‐frame upstream AUGs could affect translational efficiency. Finally, we observed that the <italic>cis</italic>‐effect was quantitatively comparable between transcriptional and translational regulation. Such effects in the two regulatory processes were more frequently compensatory, suggesting that the regulation at the two levels could be coordinated in maintaining robustness of protein expression.</p> </abstract>