Evidence map›Paper›PMID 17502392›Full record

ArticleInfection and immunity2007

Purine salvage pathways among Borrelia species.

Jonas Pettersson, Merry E Schrumpf, Sandra J Raffel, Stephen F Porcella, Cyril Guyard, Kevin Lawrence, Frank C Gherardini, Tom G Schwan

Open access · greenAbstract readComparative Study
In one paragraph

Article in Infection and immunity, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
2.8field-weighted citation impact, top 10% 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

34 citing papers in PubMed, 52 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Vector borne and zoonotic diseases (Larchmont, N.Y.) · 2024
    Article
  7. Biology · 2021
    Review
  8. Review
  9. Pathogenesis of Relapsing Fever.Current issues in molecular biology · 2021
    Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Relapsing Fevers: Neglected Tick-Borne Diseases.Frontiers in cellular and infection microbiology · 2018
    Review
  16. Article
  17. Article
  18. Article
  19. Article
  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

8 authors at 1 institution in 1 country.

Jonas PetterssonRocky Mountain Laboratories, 903 S. Fourth Street, Hamilton, MT 59840, USA.
Merry E Schrumpf
Sandra J Raffel
Stephen F Porcella
Cyril Guyard
Kevin Lawrence
Frank C Gherardini
Tom G Schwan
National Institute of Allergy and Infectious Diseases · US

Funding

Adaptations Of Borrelia Spirochetes To Their Tick Vectors And Mammalian HostsZIAAI000492 · NIAID · NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES · PI SCHWAN, TOM · 2009 to 2014
$3.3M
MOLECULAR BASIS FOR INFECTION BY BORRELIA BURGDORFERIZ01AI000492 · NIAID · NIAID EXTRAMURAL ACTIVITIES · PI SCHWAN, TOM · 1987 to 2008
$1.5M
The Role Of Alternate Sigma Factors In The Transmission Cycle Of B. BurgdorferiZ01AI000906 · NIAID · NIAID EXTRAMURAL ACTIVITIES · PI GHERARDINI, FRANK · 2002 to 2008
$739k
The Role Of Alternate Sigma Factors In The Transmission Cycle Of B. BurgdorferiZIAAI000906 · NIAID · NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES · PI GHERARDINI, FRANK · 2009 to 2009
$105k
Intramural NIH HHS
6 · The paper itself

Abstract

Genome sequencing projects on two relapsing fever spirochetes, Borrelia hermsii and Borrelia turicatae, revealed differences in genes involved in purine metabolism and salvage compared to those in the Lyme disease spirochete Borrelia burgdorferi. The relapsing fever spirochetes contained six open reading frames that are absent from the B. burgdorferi genome. These genes included those for hypoxanthine-guanine phosphoribosyltransferase (hpt), adenylosuccinate synthase (purA), adenylosuccinate lyase (purB), auxiliary protein (nrdI), the ribonucleotide-diphosphate reductase alpha subunit (nrdE), and the ribonucleotide-diphosphate reductase beta subunit (nrdF). Southern blot assays with multiple Borrelia species and isolates confirmed the presence of these genes in the relapsing fever group of spirochetes but not in B. burgdorferi and related species. TaqMan real-time reverse transcription-PCR demonstrated that the chromosomal genes (hpt, purA, and purB) were transcribed in vitro and in mice. Phosphoribosyltransferase assays revealed that, in general, B. hermsii exhibited significantly higher activity than did the B. burgdorferi cell lysate, and enzymatic activity was observed with adenine, hypoxanthine, and guanine as substrates. B. burgdorferi showed low but detectable phosphoribosyltransferase activity with hypoxanthine even though the genome lacks a discernible ortholog to the hpt gene in the relapsing fever spirochetes. B. hermsii incorporated radiolabeled hypoxanthine into RNA and DNA to a much greater extent than did B. burgdorferi. This complete pathway for purine salvage in the relapsing fever spirochetes may contribute, in part, to these spirochetes achieving high cell densities in blood.

Indexed as

Adenylosuccinate LyaseAdenylosuccinate SynthaseAnimalsBacterial ProteinsBlotting, SouthernBorreliaDNA, BacterialGenes, BacterialGuanineHumansHypoxanthineHypoxanthine PhosphoribosyltransferaseMetabolic Networks and PathwaysMiceMolecular Sequence DataPurinesAdenylosuccinate LyaseAdenylosuccinate SynthaseBacterial ProteinsDNA, BacterialGuanineHypoxanthineHypoxanthine PhosphoribosyltransferasepurinePurinesRibonucleoside Diphosphate ReductaseRNA, BacterialRNA, Messenger

Identifiers

PMID17502392
PMCPMC1952022
OpenAlexW2153789651

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.