Evidence map›Paper›PMID 34547238›Full record

ReviewMolecular cell2021

Metabolic channeling: predictions, deductions, and evidence.

Vidhi Pareek, Zhou Sha, Jingxuan He, Ned S Wingreen, Stephen J Benkovic

Abstract readReview
In one paragraph

Review in Molecular cell, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers.

0numbers the graph read from it
0cells of the map it votes in
48citing 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

48 citing papers in PubMed.

  1. Retbindin Dynamically Redistributes to Preserve Retinal Flavin-Dependent Homeostasis in Response to Riboflavin Availability and Circadian Demand.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2026
    Article
  2. Article
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  5. Molecular architecture of the human citrate synthase-malate dehydrogenase 2 metabolon.Acta crystallographica. Section D, Structural biology · 2026
    Article
  6. Article
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  8. Article
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  10. Review
  11. Coordination of cell organelles to promote metabolon formation.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  12. Review
  13. Article
  14. Article
  15. Article
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  19. Direct Quantification of Protein-Protein Interactions in Living Bacterial Cells.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025
    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

5 authors.

Vidhi PareekHuck Institutes of Life Sciences, Pennsylvania State University, University Park, PA 16802, USA.
Zhou ShaDepartment of Chemistry, Pennsylvania State University, University Park, PA 16802, USA.
Jingxuan HeDepartment of Chemistry, Pennsylvania State University, University Park, PA 16802, USA.
Ned S WingreenDepartment of Molecular Biology and Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544, USA.
Stephen J BenkovicDepartment of Chemistry, Pennsylvania State University, University Park, PA 16802, USA. Electronic address: sjb1@psu.edu.

Funding

Thermally robust chemotaxis and thermotaxis in Escherichia coliR01GM082938 · NIGMS · PRINCETON UNIVERSITY · PI WINGREEN, NED S · 2008 to 2025
$5.5M
TRANSFORMYLASE ENZYMES--DIHYDROFOLATE REDUCTASER01GM024129 · NIGMS · PENNSYLVANIA STATE UNIVERSITY-UNIV PARK · PI BENKOVIC, STEPHEN J · 1985 to 2024
$5.2M
Learning principles from the pyrenoid, a phase-separated organelleR01GM140032 · NIGMS · PRINCETON UNIVERSITY · PI JONIKAS, MARTIN CASIMIR, WINGREEN, NED S · 2021 to 2024
$2.0M
TRANSFORMYLASE ENZYMES/DIHYDROFOLATE REDUCTASER37GM024129 · NIGMS · PENNSYLVANIA STATE UNIVERSITY-UNIV PARK · PI BENKOVIC, STEPHEN J · 1987 to 1996
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NIGMS NIH HHS R01 GM024129NIGMS NIH HHS R01 GM082938NIGMS NIH HHS R01 GM140032NIGMS NIH HHS R37 GM024129
6 · The paper itself

Abstract

With the elucidation of myriad anabolic and catabolic enzyme-catalyzed cellular pathways crisscrossing each other, an obvious question arose: how could these networks operate with maximal catalytic efficiency and minimal interference? A logical answer was the postulate of metabolic channeling, which in its simplest embodiment assumes that the product generated by one enzyme passes directly to a second without diffusion into the surrounding medium. This tight coupling of activities might increase a pathway's metabolic flux and/or serve to sequester unstable/toxic/reactive intermediates as well as prevent their access to other networks. Here, we present evidence for this concept, commencing with enzymes that feature a physical molecular tunnel, to multi-enzyme complexes that retain pathway substrates through electrostatics or enclosures, and finally to metabolons that feature collections of enzymes assembled into clusters with variable stoichiometric composition. Lastly, we discuss the advantages of reversibly assembled metabolons in the context of the purinosome, the purine biosynthesis metabolon.

Indexed as

AnimalsHumansMetabolic Networks and PathwaysMetabolismMetabolomeMultienzyme ComplexesProtein Interaction MapsPurinesMultienzyme ComplexespurinePurinesmembrane-less compartmentalizationmetabolic channelingmetabolonmolecular tunnelpurinosome

Identifiers

PMID34547238
PMCPMC8485759

What OpenQuestion holds

Textmetadata
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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.