Cited by 235Gut microbiota and healthRuminant Nutrition and Digestive PhysiologyMicrobial Metabolites in Food Biotechnology

The Devil Lies in the Details: How Variations in Polysaccharide Fine-Structure Impact the Physiology and Evolution of Gut Microbes

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Martens, Eric C., Kelly, Amelia G., Tauzin, Alexandra S., Brumer, Harry·2014·Journal of Molecular Biology

Abstract

The critical importance of gastrointestinal microbes to digestion of dietary fiber in humans and other mammals has been appreciated for decades. Symbiotic microorganisms expand mammalian digestive physiology by providing an armament of diverse polysaccharide-degrading enzymes, which are largely absent in mammalian genomes. By out-sourcing this aspect of digestive physiology to our gut microbes, we maximize our ability to adapt to different carbohydrate nutrients on timescales as short as several hours due to the ability of the gut microbial community to rapidly alter its physiology from meal to meal. Because of their ability to pick up new traits by lateral gene transfer, our gut microbes also enable adaption over time periods as long as centuries and millennia by adjusting their gene content to reflect cultural dietary trends. Despite a vast amount of sequence-based insight into the metabolic potential of gut microbes, the specific mechanisms by which symbiotic gut microorganisms recognize and attack complex carbohydrates remain largely undefined. Here, we review the recent literature on this topic and posit that numerous, subtle variations in polysaccharides diversify the spectrum of available nutrient niches, each of which may be best filled by a subset of microorganisms that possess the corresponding proteins to recognize and degrade different carbohydrates. Understanding these relationships at precise mechanistic levels will be essential to obtain a complete understanding of the forces shaping gut microbial ecology and genomic evolution, as well as devising strategies to intentionally manipulate the composition and physiology of the gut microbial community to improve health.

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Crossref · 10.1016/j.jmb.2014.06.022

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  • Enzymes needed to de-modify, liberate, transport, and metabolize plant polysaccharide monosaccharides are not encoded in the human genome.

    “the numerous enzymes that are required to de-modify, liberate, transport and metabolize component monosaccharides are not encoded within the human genome60.”

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1 of the 109 references couldn’t be matched to a known paper.

Research works printed but not linked: 3

  1. [58]McDougall GJ Morrison IM Stewart D Hillman JR 1996 Plant cell walls as dietary fibre: Range, structure, processing and function Journal of the Science of Food and Agriculture 70 133 150
  2. [69]Varki A Cummings RD Esko JD Freeze HH Stanley P Bertozzi GR Hart GW Etzler ME 2009 Essentials of Glycobiology 2nd Cold Spring Harbor (NY) Cold Spring Harbor Laboratory Press 20301239
  3. [72]Salyers AA Vercellotti JR West SEH Wilkins TD 1977 Fermentation of Mucin and Plant Polysaccharides by Strains of Bacteroides from Human Colon Applied and Environmental Microbiology 33 319 322 848954 PMC170684

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Authors
Martens, E. C., Kelly, A. G., Tauzin, A. S., & Brumer, H.
Affiliations
  • University of Michigan (US)
  • University of British Columbia (CA)
Corresponding author
  • Martens, Eric C.
  • Brumer, Harry
Venue
Journal of Molecular Biology
Publisher
Elsevier BV
Published
2014-11
Volume
426
Issue
23
Pages
3851-3865
ISSN
0022-2836 (ISSN-L)
OpenAlex
W2031755183
Cited by
235
References
109
Citations by year
2026: 8 · 2025: 22 · 2024: 14 · 2023: 14 · 2022: 19 · 2021: 46 · 2020: 27 · 2019: 14 · 2018: 19 · 2017: 20 · 2016: 17 · 2015: 12 · 2014: 3
FWCI
1.63
Type
journal article
Language
en
Open access
Locations
  • Journal of Molecular Biology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institute of General Medical Sciences (R01GM099513, GM099513)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK084214, K01DK084214)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Ruminant Nutrition and Digestive Physiology
  • Health Sciences › Nursing › Nutrition and Dietetics › Microbial Metabolites in Food Biotechnology
Keywords
gut microbiota, polysaccharide degradation, dietary fiber digestion, carbohydrate recognition, polysaccharide-degrading enzymes, horizontal gene transfer, microbial adaptation
MeSH terms
Bacteria, Diet, Humans, Polysaccharides, Gastrointestinal Tract, Microbiota

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