Evidence map›Paper›PMID 16796669›Full record

ArticleMolecular microbiology2006

Antigenic variation with a twist--the Borrelia story.

Steven J Norris

Open access · bronzeAbstract readComment
PubMed Publisher
In one paragraph

Article in Molecular microbiology, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers.

0numbers the graph read from it
0cells of the map it votes in
55citing papers in PubMed
5.4field-weighted citation impact, top 3% 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

55 citing papers in PubMed, 109 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
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  6. Review
  7. Article
  8. Article
  9. Evolution of theMicrobiology spectrum · 2022
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  11. Lyme Disease Pathogenesis.Current issues in molecular biology · 2021
    Review
  12. Immune Response toCurrent issues in molecular biology · 2021
    Article
  13. Review
  14. Article
  15. Article
  16. The RpoS Gatekeeper inFrontiers in microbiology · 2019
    Article
  17. Genomic blueprint of a relapsing fever pathogen in 15th century Scandinavia.Proceedings of the National Academy of Sciences of the United States of America · 2018
    Article
  18. Article
  19. Review
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

1 author at 1 institution in 1 country.

Steven J NorrisDepartment of Pathology. University of Texas Medical School at Houston, PO Box 20708, Houston, TX 77225-0708, USA. Steven.J.Norris@uth.tmc.edu
The University of Texas Health Science Center at Houston · US

Funding

VIRULENCE-ASSOCIATED PROTEINS IN LYME DISEASER01AI037277 · NIAID · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI NORRIS, STEVEN J. · 1995 to 2015
$5.4M
NIAID NIH HHS R01 AI037277NIAID NIH HHS R01 AI37277
6 · The paper itself

Abstract

A common mechanism of immune evasion in pathogenic bacteria and protozoa is antigenic variation, in which genetic or epigenetic changes result in rapid, sequential shifts in a surface-exposed antigen. In this issue of Molecular Microbiology, Dai et al. provide the most complete description to date of the vlp/vsp antigenic variation system of the relapsing fever spirochaete, Borrelia hermsii. This elaborate, plasmid-encoded system involves an expression site that can acquire either variable large protein (vlp) or variable small protein (vsp) surface lipoprotein genes from 59 different archival copies. The archival vlp and vsp genes are arranged in clusters on at least five different plasmids. Gene conversion occurs through recombination events at upstream homology sequences (UHS) found in each gene copy, and at downstream homology sequences (DHS) found periodically among the vlp/vsp archival genes. Previous studies have shown that antigenic variation in relapsing fever Borrelia not only permits the evasion of host antibody responses, but can also result in changes in neurotropism and other pathogenic properties. The vlsE antigenic variation locus of Lyme disease spirochaetes, although similar in sequence to the relapsing fever vlp genes, has evolved a completely different antigenic variation mechanism involving segmental recombination from a contiguous array of vls silent cassettes. These two systems thus appear to represent divergence from a common precursor followed by functional convergence to create two distinct antigenic variation processes.

Indexed as

Antigenic VariationAntigens, BacterialBorreliaAntigens, Bacterial

Identifiers

PMID16796669
OpenAlexW2167727944

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.