Evidence map›Paper›PMID 18678659›Full record

ArticleInfection and immunity2008

Modular arrangement of allelic variants explains the divergence in Moraxella catarrhalis UspA protein function.

Michael J Brooks, Jennifer L Sedillo, Nikki Wagner, Cassie A Laurence, Wei Wang, Ahmed S Attia, Eric J Hansen, Scott D Gray-Owen

Abstract read
In one paragraph

Article in Infection and immunity, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
–field-weighted citation impact
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

17 citing papers in PubMed.

  1. Article
  2. Understanding the population structure ofbioRxiv : the preprint server for biology · 2025
    Article
  3. Review
  4. Review
  5. Article
  6. Article
  7. Article
  8. Vaccine targets against Moraxella catarrhalis.Expert opinion on therapeutic targets · 2016
    Review
  9. Article
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Molecular aspects of Moraxella catarrhalis pathogenesis.Microbiology and molecular biology reviews : MMBR · 2009
    Review
  17. 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

8 authors.

Michael J BrooksDepartment of Molecular Genetics, University of Toronto, Medical Sciences Building, Toronto, Ontario M5S 1A8, Canada.
Jennifer L Sedillo
Nikki Wagner
Cassie A Laurence
Wei Wang
Ahmed S Attia
Eric J Hansen
Scott D Gray-Owen

Funding

SURFACE PROTEINS OF MORAXELLA CATARRHALISR01AI036344 · NIAID · UT SOUTHWESTERN MEDICAL CENTER · PI HANSEN, ERIC JOHN · 1996 to 2013
$3.6M
NIAID NIH HHS AI36344NIAID NIH HHS R01 AI036344
6 · The paper itself

Abstract

Ubiquitous surface protein A molecules (UspAs) of Moraxella catarrhalis are large, nonfimbrial, autotransporter proteins that can be visualized as a "fuzzy" layer on the bacterial surface by transmission electron microscopy. Previous studies attributed a wide array of functions and binding activities to the closely related UspA1, UspA2, and/or UspA2H protein, yet the molecular and phylogenetic relationships among these activities remain largely unexplored. To address this issue, we determined the nucleotide sequence of the uspA1 genes from a variety of independent M. catarrhalis isolates and compared the deduced amino acid sequences to those of the previously characterized UspA1, UspA2, and UspA2H proteins. Rather than being conserved proteins, we observed a striking divergence of individual UspA1, UspA2, and UspA2H proteins resulting from the modular assortment of unrelated "cassettes" of peptide sequence. The exchange of certain variant cassettes correlates with strain-specific differences in UspA protein function and confers differing phenotypes upon these mucosal surface pathogens.

Indexed as

Amino Acid MotifsAmino Acid SequenceBacterial Outer Membrane ProteinsBase SequenceConsensus SequenceDNA, BacterialMolecular Sequence DataMoraxella catarrhalisPhenotypePolymerase Chain ReactionProtein Structure, TertiarySequence Homology, Amino AcidBacterial Outer Membrane ProteinsDNA, BacterialUspA protein, Moraxella catarrhalis

Identifiers

PMID18678659
PMCPMC2573364

What OpenQuestion holds

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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.