Evidence map›Paper›PMID 9423846›Full record

ArticleInfection and immunity1998

Identification of a genetic locus essential for serotype b-specific antigen synthesis in Actinobacillus actinomycetemcomitans.

Y Yoshida, Y Nakano, Y Yamashita, T Koga

Open access · bronzeAbstract read
In one paragraph

Article in Infection and immunity, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
8.1field-weighted citation impact, top 2% 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

19 citing papers in PubMed, 49 citations in OpenAlex.

  1. Review
  2. Article
  3. The serotype a-EmaA adhesin ofMicrobiology (Reading, England) · 2022
    Article
  4. Article
  5. Article
  6. Article
  7. ABC transporters involved in export of cell surface glycoconjugates.Microbiology and molecular biology reviews : MMBR · 2010
    Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Surface polysaccharides and iron-uptake systems of Actinobacillus pleuropneumoniae.Canadian journal of veterinary research = Revue canadienne de recherche veterinaire · 2004
    Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. 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

4 authors at 1 institution in 1 country.

Y YoshidaDepartment of Preventive Dentistry, Kyushu University Faculty of Dentistry, Fukuoka, Japan.
Y Nakano
Y Yamashita
T Koga
Kyushu University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A large gene cluster associated with the biosynthesis of the serotype-specific polysaccharide antigen (SPA) of Actinobacillus actinomycetemcomitans Y4 (serotype b) was cloned and characterized. Western blot analysis showed that Escherichia coli DH5alpha, containing a plasmid carrying this cluster, produced a polysaccharide which reacted with a monoclonal antibody directed against the SPA of A. actinomycetemcomitans Y4. High-performance liquid chromatography analysis indicated that the polysaccharide produced by an E. coli transformant, as well as A. actinomycetemcomitans Y4 SPA, was composed of rhamnose and fucose. Furthermore, using various derivatives of the plasmid, we demonstrated that the cloned 13-kb BssHII-BspHI fragment was indispensable for SPA synthesis in E. coli DH5alpha. The 24,909-bp nucleotide sequence, which included this fragment and its flanking regions, was determined. In the sequenced area, 24 open reading frames (ORFs) with the same orientation were found. Most of these were located sequentially within a short distance of each other. Many of the deduced amino acid sequences were similar to the gene products of the polysaccharide synthetic genes of other bacteria. The average G+C content (37.7%) of all 24 ORFs in the sequenced area was lower than that (45.6%) of the whole chromosome of A. actinomycetemcomitans Y4. It is noteworthy the average G+C content of the nine ORFs in the 8.5-kb central region of the 13-kb BssHII-BspHI fragment indispensable for SPA synthesis in E. coli was found to be especially low (27.0%).

Indexed as

AcetylglucosamineAggregatibacter actinomycetemcomitansAmino Acid SequenceAntibodies, MonoclonalAntigens, BacterialBase CompositionBlotting, WesternChromatography, High Pressure LiquidCloning, MolecularDNA, BacterialEscherichia coliFucoseGalactoseGene ExpressionGenome, BacterialGlucoseAcetylglucosamineAntibodies, MonoclonalAntigens, BacterialDNA, BacterialFucoseGalactoseGlucosePolysaccharides, BacterialRhamnose

Identifiers

PMID9423846
PMCPMC107865
OpenAlexW2170439191

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.