Evidence map›Paper›PMID 12562805›Full record

ArticleJournal of bacteriology2003

Glycerol-3-phosphate acquisition in spirochetes: distribution and biological activity of glycerophosphodiester phosphodiesterase (GlpQ) among Borrelia species.

Tom G Schwan, James M Battisti, Stephen F Porcella, Sandra J Raffel, Merry E Schrumpf, Elizabeth R Fischer, James A Carroll, Philip E Stewart, Patricia Rosa, Greg A Somerville

Abstract read
In one paragraph

Article in Journal of bacteriology, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing 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

42 citing papers in PubMed.

  1. Article
  2. Review
  3. Molecular survey ofCurrent research in parasitology & vector-borne diseases · 2026
    Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Laboratory Diagnosis of Lyme Borreliosis.Clinical microbiology reviews · 2021
    Review
  11. Microorganisms · 2021
    Review
  12. Pathogenesis of Relapsing Fever.Current issues in molecular biology · 2021
    Review
  13. Article
  14. Article
  15. Chromosome and Megaplasmid Sequences ofGenome announcements · 2017
    Article
  16. Article
  17. Article
  18. Article
  19. Phylogeny of a relapsing fever Borrelia species transmitted by the hard tick Ixodes scapularis.Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases · 2014
    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

10 authors.

Tom G SchwanLaboratory of Human Bacterial Pathogenesis, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, Montana 59840, USA. tom_schwan@nih.gov
James M Battisti
Stephen F Porcella
Sandra J Raffel
Merry E Schrumpf
Elizabeth R Fischer
James A Carroll
Philip E Stewart
Patricia Rosa
Greg A Somerville

Funding

Molecular Genetic Basis of the Infectious Cycle of Borrelia burgdorferiZIAAI000917 · NIAID · NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES · PI ROSA, PATRICIA A · 2009 to 2023
$13.7M
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 Genetics Of Infectious Borrelia BurgdorferiZ01AI000917 · NIAID · NIAID EXTRAMURAL ACTIVITIES · PI ROSA, PATRICIA A · 2002 to 2008
$2.2M
MOLECULAR BASIS FOR INFECTION BY BORRELIA BURGDORFERIZ01AI000492 · NIAID · NIAID EXTRAMURAL ACTIVITIES · PI SCHWAN, TOM · 1987 to 2008
$1.5M
6 · The paper itself

Abstract

Relapsing-fever spirochetes achieve high cell densities (>10(8)/ml) in their host's blood, while Lyme disease spirochetes do not (<10(5)/ml). This striking contrast in pathogenicity of these two groups of bacteria suggests a fundamental difference in their ability to either exploit or survive in blood. Borrelia hermsii, a tick-borne relapsing-fever spirochete, contains orthologs to glpQ and glpT, genes that encode glycerophosphodiester phosphodiesterase (GlpQ) and glycerol-3-phosphate transporter (GlpT), respectively. In other bacteria, GlpQ hydrolyzes deacylated phospholipids to glycerol-3-phosphate (G3P) while GlpT transports G3P into the cytoplasm. Enzyme assays on 17 isolates of borreliae demonstrated GlpQ activity in relapsing-fever spirochetes but not in Lyme disease spirochetes. Southern blots demonstrated glpQ and glpT in all relapsing-fever spirochetes but not in the Lyme disease group. A Lyme disease spirochete, Borrelia burgdorferi, that was transformed with a shuttle vector containing glpTQ from B. hermsii produced active enzyme, which demonstrated the association of glpQ with the hydrolysis of phospholipids. Sequence analysis of B. hermsii identified glpF, glpK, and glpA, which encode the glycerol facilitator, glycerol kinase, and glycerol-3-phosphate dehydrogenase, respectively, all of which are present in B. burgdorferi. All spirochetes examined had gpsA, which encodes the enzyme that reduces dihydroxyacetone phosphate (DHAP) to G3P. Consequently, three pathways for the acquisition of G3P exist among borreliae: (i) hydrolysis of deacylated phospholipids, (ii) reduction of DHAP, and (iii) uptake and phosphorylation of glycerol. The unique ability of relapsing-fever spirochetes to hydrolyze phospholipids may contribute to their higher cell densities in blood than those of Lyme disease spirochetes.

Indexed as

AnimalsBacterial ProteinsBlotting, SouthernBorreliaBorrelia burgdorferiBorrelia InfectionsChickensGlycerophosphatesHumansImmunizationMaleMiceMicroscopy, ElectronMolecular Sequence DataPhosphoric Diester HydrolasesSequence Analysis, DNAalpha-glycerophosphoric acidBacterial ProteinsglpQ protein, BacteriaGlycerophosphatesglycerophosphodiester phosphodiesterasePhosphoric Diester Hydrolases

Identifiers

PMID12562805
PMCPMC142843

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.