Evidence map›Paper›PMID 17526574›Full record

ArticleBiophysical journal2007

Competing docking interactions can bring about bistability in the MAPK cascade.

Stefan Legewie, Birgit Schoeberl, Nils Blüthgen, Hanspeter Herzel

Open access · bronzeAbstract read
In one paragraph

Article in Biophysical journal, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
3.5field-weighted citation impact, top 7% of its field
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

36 citing papers in PubMed, 95 citations in OpenAlex.

  1. Article
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  3. Review
  4. Dynamics and Sensitivity of Signaling Pathways.Current pathobiology reports · 2022
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  12. Dissipative structures in biological systems: bistability, oscillations, spatial patterns and waves.Philosophical transactions. Series A, Mathematical, physical, and engineering sciences · 2018
    Review
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  14. Article
  15. Article
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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

4 authors at 2 institutions in 2 countries.

Stefan LegewieInstitute for Theoretical Biology, Humboldt University, Berlin, Germany. s.legewie@biologie.hu-berlin.de
Birgit Schoeberl
Nils Blüthgen
Hanspeter Herzel
Humboldt-Universität zu Berlin · DEMerrimack Pharmaceuticals (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Mitogen-activated protein kinases are crucial regulators of various cell fate decisions including proliferation, differentiation, and apoptosis. Depending on the cellular context, the Raf-Mek-Erk mitogen-activated protein kinase cascade responds to extracellular stimuli in an all-or-none manner, most likely due to bistable behavior. Here, we describe a previously unrecognized positive-feedback mechanism that emerges from experimentally observed sequestration effects in the core Raf-Mek-Erk cascade. Unphosphorylated/monophosphorylated Erk sequesters Mek into Raf-inaccessible complexes upon weak stimulation, and thereby inhibits cascade activation. Mek, once phosphorylated by Raf, triggers Erk phosphorylation, which in turn induces dissociation of Raf-inaccessible Mek-Erk heterodimers, and thus further amplifies Mek phosphorylation. We show that this positive circuit can bring about bistability for parameter values measured experimentally in living cells. Previous studies revealed that bistability can also arise from enzyme depletion effects in the Erk double (de)phosphorylation cycle. We demonstrate that the feedback mechanism proposed in this article synergizes with such enzyme depletion effects to bring about a much larger bistable range than either mechanism alone. Our results show that stable docking interactions and competition effects, which are common in protein kinase cascades, can result in sequestration-based feedback, and thus can have profound effects on the qualitative behavior of signaling pathways.

Indexed as

MAP Kinase Signaling SystemAnimalsBinding, CompetitiveBiophysicsExtracellular Signal-Regulated MAP KinasesHumansKineticsMiceModels, TheoreticalPhosphorylationProtein ConformationProto-Oncogene Proteins c-rafRatsSignal TransductionExtracellular Signal-Regulated MAP KinasesProto-Oncogene Proteins c-raf

Identifiers

PMID17526574
PMCPMC1965452
OpenAlexW1994780544

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.