Evidence map›Paper›PMID 22753031›Full record

ArticleNucleic acids research2012

Defining the DNA uptake specificity of naturally competent Haemophilus influenzae cells.

Joshua Chang Mell, Ira M Hall, Rosemary J Redfield

Open access · goldAbstract read
In one paragraph

Article in Nucleic acids research, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
1.2field-weighted citation impact, top 22% 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

33 citing papers in PubMed, 60 citations in OpenAlex.

  1. Article
  2. Article
  3. Journal of bacteriology · 2026
    Review
  4. Article
  5. Article
  6. Article
  7. Genomic profiling of cefotaxime-resistantFrontiers in microbiology · 2025
    Article
  8. Article
  9. Article
  10. Article
  11. Repeat sequences limit the effectiveness of lateral gene transfer and favored the evolution of meiotic sex in early eukaryotes.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Natural Transformation ofFrontiers in microbiology · 2021
    Article
  18. Review
  19. Review
  20. Article
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 2 institutions in 2 countries.

Joshua Chang MellDepartment of Zoology, Life Sciences Institute, University of British Columbia, Vancouver, BC V6T1Z3, Canada.
Ira M Hall
Rosemary J Redfield
University of Virginia · USUniversity of British Columbia · CA

Funding

Extent, Origin, and Control of Structural Variation in Mammalian GenomesDP2OD006493 · OD · UNIVERSITY OF VIRGINIA · PI HALL, IRA M · 2009 to 2009
$2.3M
The extent and limits of natural transformation in Haemophilus influenzaeF32AI084427 · NIAID · UNIVERSITY OF BRITISH COLUMBIA · PI MELL, JOSHUA CHANG · 2011 to 2013
$171k
CIHR MOP-53263NIAID NIH HHS 5F32AI084427NIAID NIH HHS F32 AI084427NIH HHS DP2 OD006493NIH HHS DP2OD006493
6 · The paper itself

Abstract

Some naturally competent bacteria exhibit both a strong preference for DNA fragments containing specific 'uptake sequences' and dramatic overrepresentation of these sequences in their genomes. Uptake sequences are often assumed to directly reflect the specificity of the DNA uptake machinery, but the actual specificity has not been well characterized for any bacterium. We produced a detailed analysis of Haemophilus influenzae's uptake specificity, using Illumina sequencing of degenerate uptake sequences in fragments recovered from competent cells. This identified an uptake motif with the same consensus as the motif overrepresented in the genome, with a 9 bp core (AAGTGCGGT) and two short flanking T-rich tracts. Only four core bases (GCGG) were critical for uptake, suggesting that these make strong specific contacts with the uptake machinery. Other core bases had weaker roles when considered individually, as did the T-tracts, but interaction effects between these were also determinants of uptake. The properties of genomic uptake sequences are also constrained by mutational biases and selective forces acting on USSs with coding and termination functions. Our findings define constraints on gene transfer by natural transformation and suggest how the DNA uptake machinery overcomes the physical constraints imposed by stiff highly charged DNA molecules.

Indexed as

ArtifactsBase Pair MismatchBase SequenceConsensus SequenceDNAGenome, BacterialHaemophilus influenzaeHigh-Throughput Nucleotide SequencingNucleotide MotifsPeriplasmSequence Analysis, DNADNA

Identifiers

PMID22753031
PMCPMC3458573
OpenAlexW2075687681

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.