Evidence map›Paper›PMID 34002016›Full record

ArticleCommunications biology2021

Proline codon pair selection determines ribosome pausing strength and translation efficiency in bacteria.

Ralph Krafczyk, Fei Qi, Alina Sieber, Judith Mehler, Kirsten Jung, Dmitrij Frishman, Jürgen Lassak

Abstract read
In one paragraph

Article in Communications biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

23 citing papers in PubMed.

  1. eIF5A and polyamines restrict mRNA levels in response to ribosome stalls.Proceedings of the National Academy of Sciences of the United States of America · 2026
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  9. A statistical-physics approach for codon usage optimisation.Computational and structural biotechnology journal · 2024
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Ralph Krafczyk *Department of Biology I, Microbiology, Ludwig-Maximilians-Universität München, München, Germany.ORCID http://orcid.org/0000-0001-6171-6086
Fei Qi *Institute of Genomics, School of Biomedical Sciences, Huaqiao University, Xiamen, China.ORCID http://orcid.org/0000-0003-4578-0146
Alina SieberDepartment of Biology I, Microbiology, Ludwig-Maximilians-Universität München, München, Germany.ORCID http://orcid.org/0000-0003-3910-6868
Judith MehlerDepartment of Biology I, Microbiology, Ludwig-Maximilians-Universität München, München, Germany.ORCID http://orcid.org/0000-0001-9771-5093
Kirsten JungDepartment of Biology I, Microbiology, Ludwig-Maximilians-Universität München, München, Germany.
Dmitrij FrishmanDepartment of Bioinformatics, Wissenschaftzentrum Weihenstephan, Technische Universität München, Freising, Germany. d.frishman@wzw.tum.de.ORCID http://orcid.org/0000-0002-9006-4707
Jürgen LassakDepartment of Biology I, Microbiology, Ludwig-Maximilians-Universität München, München, Germany. juergen.lassak@lmu.de.ORCID http://orcid.org/0000-0003-3936-3389

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The speed of mRNA translation depends in part on the amino acid to be incorporated into the nascent chain. Peptide bond formation is especially slow with proline and two adjacent prolines can even cause ribosome stalling. While previous studies focused on how the amino acid context of a Pro-Pro motif determines the stalling strength, we extend this question to the mRNA level. Bioinformatics analysis of the Escherichia coli genome revealed significantly differing codon usage between single and consecutive prolines. We therefore developed a luminescence reporter to detect ribosome pausing in living cells, enabling us to dissect the roles of codon choice and tRNA selection as well as to explain the genome scale observations. Specifically, we found a strong selective pressure against CCC/U-C, a sequon causing ribosomal frameshifting even under wild-type conditions. On the other hand, translation efficiency as positive evolutionary driving force led to an overrepresentation of CCG. This codon is not only translated the fastest, but the corresponding prolyl-tRNA reaches almost saturating levels. By contrast, CCA, for which the cognate prolyl-tRNA amounts are limiting, is used to regulate pausing strength. Thus, codon selection both in discrete positions but especially in proline codon pairs can tune protein copy numbers.

Indexed as

CodonPeptide Chain Elongation, TranslationalProtein BiosynthesisSelection, GeneticEscherichia coliProlineRibosomesRNA, Transfer, ProCodonProlineRNA, Transfer, Pro

Identifiers

PMID34002016
PMCPMC8129111

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.