Evidence map›Paper›PMID 26824074›Full record

ArticleScience advances2016

Conditional iron and pH-dependent activity of a non-enzymatic glycolysis and pentose phosphate pathway.

Markus A Keller, Andre Zylstra, Cecilia Castro, Alexandra V Turchyn, Julian L Griffin, Markus Ralser

Open access · goldAbstract read
In one paragraph

Article in Science advances, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed
3.8field-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

45 citing papers in PubMed, 106 citations in OpenAlex.

  1. Article
  2. Article
  3. The return of metabolism: biochemistry and physiology of glycolysis.Biological reviews of the Cambridge Philosophical Society · 2026
    Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. BioIron: Origin, Chemical Properties, and Biological Functions.Advances in experimental medicine and biology · 2025
    Review
  13. Article
  14. Evolution of plant metabolism: the state-of-the-art.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2024
    Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Reflections upon a new definition of life.Die Naturwissenschaften · 2023
    Article
  20. Review
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

6 authors at 2 institutions in 1 country.

Markus A KellerDepartment of Biochemistry and Cambridge Systems Biology Centre, University of Cambridge, 80 Tennis Court Road, Cambridge CB2 1GA, UK.ORCID 0000-0002-8654-9920
Andre ZylstraDepartment of Biochemistry and Cambridge Systems Biology Centre, University of Cambridge, 80 Tennis Court Road, Cambridge CB2 1GA, UK.ORCID 0000-0001-9762-6728
Cecilia CastroDepartment of Biochemistry and Cambridge Systems Biology Centre, University of Cambridge, 80 Tennis Court Road, Cambridge CB2 1GA, UK.
Alexandra V TurchynDepartment of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ, UK.ORCID 0000-0002-9298-2173
Julian L GriffinDepartment of Biochemistry and Cambridge Systems Biology Centre, University of Cambridge, 80 Tennis Court Road, Cambridge CB2 1GA, UK.; MRC Human Nutrition Research, Elsie Widdowson Laboratory, 120 Fulbourn Road, Cambridge CB1 9NL, UK.
Markus RalserDepartment of Biochemistry and Cambridge Systems Biology Centre, University of Cambridge, 80 Tennis Court Road, Cambridge CB2 1GA, UK.; The Francis Crick Institute, Mill Hill Laboratory, The Ridgeway, Mill Hill, London NW7 1AA, UK.ORCID 0000-0001-9535-7413
University of Cambridge · GBMRC Human Nutrition Research · GB

Funding

European Research Council 260809Medical Research Council MC_UP_A090_1006Medical Research Council MR/P011705/1Wellcome TrustWellcome Trust RG 093735/Z/10/Z
6 · The paper itself

Abstract

Little is known about the evolutionary origins of metabolism. However, key biochemical reactions of glycolysis and the pentose phosphate pathway (PPP), ancient metabolic pathways central to the metabolic network, have non-enzymatic pendants that occur in a prebiotically plausible reaction milieu reconstituted to contain Archean sediment metal components. These non-enzymatic reactions could have given rise to the origin of glycolysis and the PPP during early evolution. Using nuclear magnetic resonance spectroscopy and high-content metabolomics that allowed us to measure several thousand reaction mixtures, we experimentally address the chemical logic of a metabolism-like network constituted from these non-enzymatic reactions. Fe(II), the dominant transition metal component of Archean oceanic sediments, has binding affinity toward metabolic sugar phosphates and drives metabolism-like reactivity acting as both catalyst and cosubstrate. Iron and pH dependencies determine a metabolism-like network topology and comediate reaction rates over several orders of magnitude so that the network adopts conditional activity. Alkaline pH triggered the activity of the non-enzymatic PPP pendant, whereas gentle acidic or neutral conditions favored non-enzymatic glycolytic reactions. Fe(II)-sensitive glycolytic and PPP-like reactions thus form a chemical network mimicking structural features of extant carbon metabolism, including topology, pH dependency, and conditional reactivity. Chemical networks that obtain structure and catalysis on the basis of transition metals found in Archean sediments are hence plausible direct precursors of cellular metabolic networks.

Indexed as

Biological EvolutionCarbonCatalysisGlycolysisHydrogen-Ion ConcentrationIronMagnetic Resonance SpectroscopyMetabolic Networks and PathwaysMetabolomicsOceans and SeasPentose Phosphate PathwaySugar PhosphatesCarbonIronSugar Phosphatesconditional chemical networksearly evolution of metabolismiron activated metabolism-like interconversionsliquid chromatography - tandem mass spectrometrymetabolic networkmetabolomicsnon-enzymatic network topologypH dependency

Identifiers

PMID26824074
PMCPMC4730858
OpenAlexW2241063889

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

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.