Evidence map›Paper›PMID 20418441›Full record

ArticleApplied and environmental microbiology2010

Diversity of 16S rRNA genes within individual prokaryotic genomes.

Anna Y Pei, William E Oberdorf, Carlos W Nossa, Ankush Agarwal, Pooja Chokshi, Erika A Gerz, Zhida Jin, Peng Lee, Liying Yang, Michael Poles and 6 more

Erratum issuedAbstract read
In one paragraph

Article in Applied and environmental microbiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 142 papers.

0numbers the graph read from it
0cells of the map it votes in
142citing papers in PubMed
8.7field-weighted citation impact, top 1% 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

142 citing papers in PubMed, 278 citations in OpenAlex.

  1. Trial
  2. Review
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  4. Article
  5. Article
  6. Heterogeneous multicopy of blaNature communications · 2026
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  8. Characterization ofInternational journal of systematic and evolutionary microbiology · 2025
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  11. Article
  12. Article
  13. Article
  14. Impacts of ribosomal RNA sequence variation on gene expression and phenotype.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025
    Review
  15. Article
  16. Article
  17. First molecular phylogeny ofOpen veterinary journal · 2024
    Article
  18. Genomic signatures of cold adaptation in the family Colwelliaceae.Extremophiles : life under extreme conditions · 2024
    Article
  19. International journal of systematic and evolutionary microbiology · 2024
    Article
  20. Article

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

4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

16 authors at 5 institutions in 1 country.

Anna Y PeiNew York University College of Arts and Science, New York, New York 10012, USA.
William E Oberdorf
Carlos W Nossa
Ankush Agarwal
Pooja Chokshi
Erika A Gerz
Zhida Jin
Peng Lee
Liying Yang
Michael Poles
Stuart M Brown
Steven Sotero
Todd Desantis
Eoin Brodie
Karen Nelson
Zhiheng Pei
New York University · USLawrence Berkeley National Laboratory · USJ. Craig Venter Institute · USTufts University · USUnited States Department of Veterans Affairs · US

Funding

Etiology &pathogenesis of chronic tonsillar hypertrophyR01AI063477 · NIAID · NEW YORK UNIVERSITY SCHOOL OF MEDICINE · PI PEI, ZHIHENG · 2005 to 2009
$1.6M
Foregut microbiome in development of esophageal adenocarcinomaUH2CA140233 · NCI · NEW YORK UNIVERSITY SCHOOL OF MEDICINE · PI NELSON, KAREN E., PEI, ZHIHENG · 2009 to 2009
$1.1M
NCI NIH HHS UH2 CA140233NCI NIH HHS UH2CA140233NIAID NIH HHS R01 AI063477NIAID NIH HHS R01AI063477
6 · The paper itself

Abstract

Analysis of intragenomic variation of 16S rRNA genes is a unique approach to examining the concept of ribosomal constraints on rRNA genes; the degree of variation is an important parameter to consider for estimation of the diversity of a complex microbiome in the recently initiated Human Microbiome Project (http://nihroadmap.nih.gov/hmp). The current GenBank database has a collection of 883 prokaryotic genomes representing 568 unique species, of which 425 species contained 2 to 15 copies of 16S rRNA genes per genome (2.22 +/- 0.81). Sequence diversity among the 16S rRNA genes in a genome was found in 235 species (from 0.06% to 20.38%; 0.55% +/- 1.46%). Compared with the 16S rRNA-based threshold for operational definition of species (1 to 1.3% diversity), the diversity was borderline (between 1% and 1.3%) in 10 species and >1.3% in 14 species. The diversified 16S rRNA genes in Haloarcula marismortui (diversity, 5.63%) and Thermoanaerobacter tengcongensis (6.70%) were highly conserved at the 2 degrees structure level, while the diversified gene in B. afzelii (20.38%) appears to be a pseudogene. The diversified genes in the remaining 21 species were also conserved, except for a truncated 16S rRNA gene in "Candidatus Protochlamydia amoebophila." Thus, this survey of intragenomic diversity of 16S rRNA genes provides strong evidence supporting the theory of ribosomal constraint. Taxonomic classification using the 16S rRNA-based operational threshold could misclassify a number of species into more than one species, leading to an overestimation of the diversity of a complex microbiome. This phenomenon is especially seen in 7 bacterial species associated with the human microbiome or diseases.

Indexed as

Genome, ArchaealGenome, BacterialPolymorphism, GeneticGenes, rRNARNA, Ribosomal, 16SRNA, Ribosomal, 16S

Identifiers

PMID20418441
PMCPMC2893482
OpenAlexW2132944857

What OpenQuestion holds

Textmetadata
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.