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The DEAD-Box Protein Dhh1p Couples mRNA Decay and Translation by Monitoring Codon Optimality

Open access
Radhakrishnan, Aditya, Chen, Ying-Hsin, Martin, Sophie, Alhusaini, Najwa, Green, Rachel, Coller, Jeff·2016·Cell

Abstract

Summary A major determinant of mRNA half-life is the codon-dependent rate of translational elongation. How the processes of translational elongation and mRNA decay communicate is unclear. Here we establish that the DEAD-box protein Dhh1p is a sensor of codon optimality that targets an mRNA for decay. First, we find mRNAs whose translation elongation rate is slowed by inclusion of nonoptimal codons are specifically degraded in a Dhh1p-dependent manner. Biochemical experiments show Dhh1p is preferentially associated with mRNAs with suboptimal codon choice. We find these effects on mRNA decay are sensitive to the number of slow moving ribosomes on an mRNA. Moreover, we find Dhh1p overexpression leads to the accumulation of ribosomes specifically on mRNAs (and even codons) of low codon optimality. Lastly, Dhh1p physically interacts with ribosomes in vivo. Together, these data argue that Dhh1p is a sensor for ribosome speed, targeting an mRNA for repression and subsequent decay.

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Metadata

Authors
Radhakrishnan, A., Chen, Y.-H., Martin, S., Alhusaini, N., Green, R., & Coller, J.
Venue
Cell
Publisher
Elsevier BV
Published
2016-09
Volume
167
Issue
1
Pages
122-132.e9
ISSN
0092-8674 (ISSN-L)
OpenAlex
W2520264800
Cited by
289
References
12
FWCI
14.75
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: The DEAD-Box Protein Dhh1p Couples mRNA Decay and Translation by Monitoring Codon Optimality. https://app.cochat.ai/papers/10.1016/j.cell.2016.08.053
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Radhakrishnan, A., Chen, Y.-H., Martin, S., Alhusaini, N., Green, R., & Coller, J. (2016). The DEAD-Box Protein Dhh1p Couples mRNA Decay and Translation by Monitoring Codon Optimality. Cell. https://doi.org/10.1016/j.cell.2016.08.053

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