Evidence map›Paper›PMID 16428394›Full record

ArticleJournal of bacteriology2006

Function and evolution of plasmid-borne genes for pyrimidine biosynthesis in Borrelia spp.

Jianmin Zhong, Stephane Skouloubris, Qiyuan Dai, Hannu Myllykallio, Alan G Barbour

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 2006. 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
1.7field-weighted citation impact, top 17% 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, 31 citations in OpenAlex.

  1. Article
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  5. Article
  6. Pathogenesis of Relapsing Fever.Current issues in molecular biology · 2021
    Review
  7. Article
  8. 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
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Flavin-dependent thymidylate synthase X limits chromosomal DNA replication.Proceedings of the National Academy of Sciences of the United States of America · 2008
    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

5 authors at 2 institutions in 2 countries.

Jianmin ZhongDepartments of Microbiology and of Molecular Genetics and Medicine, University of California Irvine, Irvine, CA 92697-4028, USA.
Stephane Skouloubris
Qiyuan Dai
Hannu Myllykallio
Alan G Barbour
University of California, Irvine · USCentre National de la Recherche Scientifique · FR

Funding

MOLECULAR BASIS OF BORRELIA PATHOGENESISR37AI024424 · NIAID · UNIVERSITY OF CALIFORNIA-IRVINE · PI BARBOUR, ALAN G. · 2001 to 2010
$3.5M
MOLECULAR BASIS OF BORRELIA PATHOGENESISR01AI024424 · NIAID · UNIVERSITY OF TEXAS HLTH SCI CTR SAN ANT · PI BARBOUR, ALAN G. · 1987 to 2000
$339k
NIAID NIH HHS AI24424NIAID NIH HHS R01 AI024424NIAID NIH HHS R37 AI024424
6 · The paper itself

Abstract

The thyX gene for thymidylate synthase of the Lyme borreliosis (LB) agent Borrelia burgdorferi is located in a 54-kb linear plasmid. In the present study, we identified an orthologous thymidylate synthase gene in the relapsing fever (RF) agent Borrelia hermsii, located it in a 180-kb linear plasmid, and demonstrated its expression. The functions of the B. hermsii and B. burgdorferi thyX gene products were evaluated both in vivo, by complementation of a thymidylate synthase-deficient Escherichia coli mutant, and in vitro, by testing their activities after purification. The B. hermsii thyX gene complemented the thyA mutation in E. coli, and purified B. hermsii ThyX protein catalyzed the conversion of dTMP from dUMP. In contrast, the B. burgdorferi ThyX protein had only weakly detectable activity in vitro, and the B. burgdorferi thyX gene did not provide complementation in vivo. The lack of activity of B. burgdorferi's ThyX protein was associated with the substitution of a cysteine for a highly conserved arginine at position 91. The B. hermsii thyX locus was further distinguished by the downstream presence in the plasmid of orthologues of nrdI, nrdE, and nrdF, which encode the subunits of ribonucleoside diphosphate reductase and which are not present in the LB agents B. burgdorferi and Borrelia garinii. Phylogenetic analysis suggested that the nrdIEF cluster of B. hermsii was acquired by horizontal gene transfer. These findings indicate that Borrelia spp. causing RF have a greater capability for de novo pyrimidine synthesis than those causing LB, thus providing a basis for some of the biological differences between the two groups of pathogens.

Indexed as

Genome, BacterialAmino Acid SequenceBiological EvolutionBorreliaDNA, BacterialEvolution, MolecularGene Transfer, HorizontalLyme DiseaseMolecular Sequence DataPhylogenyPlasmidsPyrimidinesDNA, BacterialpyrimidinePyrimidines

Identifiers

PMID16428394
PMCPMC1347342
OpenAlexW2123147993

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.