Evidence map›Paper›PMID 19562037›Full record

ArticlePloS one2009

A comprehensive approach to identification of surface-exposed, outer membrane-spanning proteins of Leptospira interrogans.

Marija Pinne, David A Haake

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 53 papers.

0numbers the graph read from it
0cells of the map it votes in
53citing papers in PubMed
4.7field-weighted citation impact, top 4% 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

53 citing papers in PubMed, 86 citations in OpenAlex.

  1. Unveiling the impact ofInfection and immunity · 2024
    Article
  2. Immunological characterization of recombinant outer membrane Loa22 protein of local pathogenicVeterinary research forum : an international quarterly journal · 2024
    Article
  3. Review
  4. Components Subcellular Localization: Cell Surface Exposure.Methods in molecular biology (Clifton, N.J.) · 2024
    Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Review
  12. Review
  13. Article
  14. Article
  15. Article
  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

2 authors at 1 institution in 1 country.

Marija PinneResearch Service, 151, Veterans Affairs Greater Los Angeles Healthcare System, Los Angeles, CA, USA. mpinne@ucla.edu
David A Haake
University of California, Los Angeles · US

Funding

Outer Membrane Proteins of Pathogenic Leptospira SpeciesR01AI034431 · NIAID · BRENTWOOD BIOMEDICAL RESEARCH INSTITUTE · PI GOMES-SOLECKI, MARIA, HAAKE, DAVID A · 2003 to 2015
$4.1M
OUTER MEMBRANE PROTEINS OF PATHOGENIC LEPTOSPIRA SPECIESR21AI034431 · NIAID · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI HAAKE, DAVID A · 2001 to 2001
$252k
OUTER MEMBRANE PROTEINS OF PATHOGENIC LEPTOSPIRA SPECIESR29AI034431 · NIAID · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI HAAKE, DAVID A · 1996 to 2000
$91k
NIAID NIH HHS AI-34431NIAID NIH HHS R01 AI034431NIAID NIH HHS R21 AI034431NIAID NIH HHS R29 AI034431
6 · The paper itself

Abstract

Leptospirosis is a zoonosis with worldwide distribution caused by pathogenic spirochetes belonging to the genus Leptospira. The leptospiral life cycle involves transmission via fresh water and colonization of the renal tubules of their reservoir hosts or infection of accidental hosts, including humans. Bacterial outer membrane proteins (OMPs), particularly those with surface-exposed regions, play crucial roles in virulence mechanisms of pathogens and the adaptation to various environmental conditions, including those of the mammalian host. Little is known about the surface-exposed OMPs in Leptospira, particularly those with outer membrane-spanning domains. Herein, we describe a comprehensive strategy for identification and characterization of leptospiral transmembrane OMPs. The genomic sequence of L. interrogans serovar Copenhageni strain Fiocruz L1-130 allowed us to employ the beta-barrel prediction programs, PRED-TMBB and TMBETA-NET, to identify potential transmembrane OMPs. Several complementary methods were used to characterize four novel OMPs, designated OmpL36, OmpL37, OmpL47 and OmpL54. In addition to surface immunofluorescence and surface biotinylation, we describe surface proteolysis of intact leptospires as an improved method for determining the surface exposure of leptospiral proteins. Membrane integration was confirmed using techniques for removal of peripheral membrane proteins. We also demonstrate deficiencies in the Triton X-114 fractionation method for assessing the outer membrane localization of transmembrane OMPs. Our results establish a broadly applicable strategy for the elucidation of novel surface-exposed outer membrane-spanning proteins of Leptospira, an essential step in the discovery of potential virulence factors, diagnostic antigens and vaccine candidates.

Indexed as

Antigens, BacterialBacterial Outer Membrane ProteinsBiotinylationCloning, MolecularDetergentsGenome, BacterialGenomicsLeptospira interrogansMembrane ProteinsMicroscopy, FluorescenceModels, BiologicalRecombinant ProteinsSubcellular FractionsVirulenceVirulence FactorsAntigens, BacterialBacterial Outer Membrane ProteinsDetergentsMembrane ProteinsRecombinant ProteinsVirulence Factors

Identifiers

PMID19562037
PMCPMC2698987
OpenAlexW2049436043

What OpenQuestion holds

Textmetadata
LicenceCC0
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.