Evidence map›Paper›PMID 27137179›Full record

ReviewCellular and molecular life sciences : CMLS2016

The Sus operon: a model system for starch uptake by the human gut Bacteroidetes.

Matthew H Foley, Darrell W Cockburn, Nicole M Koropatkin

Open access · greenAbstract readReview
In one paragraph

Review in Cellular and molecular life sciences : CMLS, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 130 papers.

0numbers the graph read from it
0cells of the map it votes in
130citing papers in PubMed
8.7field-weighted citation impact, top 2% 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

130 citing papers in PubMed, 261 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. A system for transferring large genetic loci inApplied and environmental microbiology · 2026
    Article
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  9. Phase variation inEngineering microbiology · 2026
    Article
  10. Identification and characterization of the functional LolB ortholog inbioRxiv : the preprint server for biology · 2026
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Microbial plastic degradation: enzymes, pathways, challenges, and perspectives.Microbiology and molecular biology reviews : MMBR · 2025
    Review
  16. Maternal group BAnnals of medicine · 2025
    Article
  17. Article
  18. Article
  19. DNA-utilization loci enable exogenous DNA metabolism in gut Bacteroidales.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  20. Article

70 more citing papers are in PubMed but not listed here.

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

3 authors at 1 institution in 1 country.

Matthew H FoleyDepartment of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI, 48109, USA.
Darrell W CockburnDepartment of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI, 48109, USA.
Nicole M KoropatkinDepartment of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI, 48109, USA. nkoropat@umich.edu.
University of Michigan–Ann Arbor · US

Funding

University of Michigan Center for Gastrointestinal ResearchP30DK034933 · NIDDK · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI OWYANG, CHUNG · 1986 to 2021
$22.5M
Cellular Biotechnology Training Program (CBTP)T32GM008353 · NIGMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI SCHWENDEMAN, ANNA · 1991 to 2021
$9.3M
Cellular Biotechnology Training Program (CBTP) - Years 31-35T32GM145304 · NIGMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI Guizhi Zhu · 2022 to 2026
$2.6M
Assembly of a model glycan uptake system from a symbiotic human gut bacteriumR01GM118475 · NIGMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI KOROPATKIN, NICOLE M · 2016 to 2020
$1.8M
NIDDK NIH HHS P30 DK034933NIGMS NIH HHS R01 GM118475NIGMS NIH HHS T32 GM008353NIGMS NIH HHS T32 GM145304
6 · The paper itself

Abstract

Resident bacteria in the densely populated human intestinal tract must efficiently compete for carbohydrate nutrition. The Bacteroidetes, a dominant bacterial phylum in the mammalian gut, encode a plethora of discrete polysaccharide utilization loci (PULs) that are selectively activated to facilitate glycan capture at the cell surface. The most well-studied PUL-encoded glycan-uptake system is the starch utilization system (Sus) of Bacteroides thetaiotaomicron. The Sus includes the requisite proteins for binding and degrading starch at the surface of the cell preceding oligosaccharide transport across the outer membrane for further depolymerization to glucose in the periplasm. All mammalian gut Bacteroidetes possess analogous Sus-like systems that target numerous diverse glycans. In this review, we discuss what is known about the eight Sus proteins of B. thetaiotaomicron that define the Sus-like paradigm of nutrient acquisition that is exclusive to the Gram-negative Bacteroidetes. We emphasize the well-characterized outer membrane proteins SusDEF and the α-amylase SusG, each of which have unique structural features that allow them to interact with starch on the cell surface. Despite the apparent redundancy in starch-binding sites among these proteins, each has a distinct role during starch catabolism. Additionally, we consider what is known about how these proteins dynamically interact and cooperate in the membrane and propose a model for the formation of the Sus outer membrane complex.

Indexed as

Models, BiologicalBacterial ProteinsBacteroidetesGastrointestinal TractHumansOperonStarchBacterial ProteinsStarchBacteroides thetaiotaomicronGut microbiotaStarchStarch utilization systemSus

Identifiers

PMID27137179
PMCPMC4924478
OpenAlexW2345460740

What OpenQuestion holds

Textmetadata
LicenceTDM
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.