Cited by 4,699Gut microbiota and healthGenomics and Phylogenetic StudiesMicrobial Community Ecology and Physiology

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Metagenomic Analysis of the Human Distal Gut Microbiome

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Abstract

The human intestinal microbiota is composed of 10(13) to 10(14) microorganisms whose collective genome ("microbiome") contains at least 100 times as many genes as our own genome. We analyzed approximately 78 million base pairs of unique DNA sequence and 2062 polymerase chain reaction-amplified 16S ribosomal DNA sequences obtained from the fecal DNAs of two healthy adults. Using metabolic function analyses of identified genes, we compared our human genome with the average content of previously sequenced microbial genomes. Our microbiome has significantly enriched metabolism of glycans, amino acids, and xenobiotics; methanogenesis; and 2-methyl-d-erythritol 4-phosphate pathway-mediated biosynthesis of vitamins and isoprenoids. Thus, humans are superorganisms whose metabolism represents an amalgamation of microbial and human attributes.

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Metadata

Authors
Gill, S. R., Pop, M., DeBoy, R. T., Eckburg, P. B., Turnbaugh, P. J., Samuel, B. S., Gordon, J. I., Relman, D. A., Fraser-Liggett, C. M., & Nelson, K. E.
Affiliations
  • Washington University in St. Louis (US)
  • The Institute for Genomic Research, 9712 Medical Center Drive, Rockville, MD 20850, USA.
Corresponding author
  • Gill, Steven R.
  • Pop, Mihai
Venue
Science
Published
2006-06-02
Volume
312
Issue
5778
Pages
1355-1359
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2145336165
Cited by
4,699
References
3
Citations by year
2026: 64 · 2025: 183 · 2024: 212 · 2023: 255 · 2022: 330 · 2021: 303 · 2020: 353 · 2019: 285 · 2018: 250 · 2017: 259 · 2016: 245 · 2015: 256 · 2014: 249 · 2013: 254 · 2012: 247
FWCI
68.03
Type
journal article
Language
en
Open access
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institute of Allergy and Infectious Diseases (AI51259, R01AI051259)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK 70977, R01DK070977)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Phylogenetic Studies
  • Physical Sciences › Environmental Science › Ecology › Microbial Community Ecology and Physiology
Keywords
human gut microbiome, metagenomics, 16S rRNA gene sequencing, fecal DNA, microbial gene content, glycogen metabolism, amino acid metabolism, xenobiotic metabolism, methanogenesis, methylerythritol phosphate pathway, vitamin biosynthesis, isoprenoid biosynthesis
MeSH terms
Adult, Bacteria, Bifidobacterium, Dietary Carbohydrates, Dietary Fiber, DNA, Ribosomal, Feces, Female, Fermentation, Humans, Intestinal Mucosa, Intestines, Male, Molecular Sequence Data, Phylogeny, RNA, Ribosomal, 16S, Genetic Variation, Xenobiotics, Open Reading Frames, Genome, Bacterial, Genomics

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