Evidence map›Paper›PMID 23071827›Full record

ArticlePloS one2012

Staphylococcus aureus proteins Sbi and Efb recruit human plasmin to degrade complement C3 and C3b.

Tina K Koch, Michael Reuter, Diana Barthel, Sascha Böhm, Jean van den Elsen, Peter Kraiczy, Peter F Zipfel, Christine Skerka

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed
5.0field-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

38 citing papers in PubMed, 68 citations in OpenAlex.

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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 3 institutions in 2 countries.

Tina K KochDepartment of Infection Biology, Leibniz Institute for Natural Product Research and Infection, Biology, Jena, Germany.
Michael Reuter
Diana Barthel
Sascha Böhm
Jean van den Elsen
Peter Kraiczy
Peter F Zipfel
Christine Skerka
Leibniz-Institut für Naturstoff-Forschung und Infektionsbiologie e. V. - Hans-Knöll-Institut (HKI) · DEGoethe University Frankfurt · DEUniversity of Bath · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Upon host infection, the human pathogenic microbe Staphylococcus aureus (S. aureus) immediately faces innate immune reactions such as the activated complement system. Here, a novel innate immune evasion strategy of S. aureus is described. The staphylococcal proteins surface immunoglobulin-binding protein (Sbi) and extracellular fibrinogen-binding protein (Efb) bind C3/C3b simultaneously with plasminogen. Bound plasminogen is converted by bacterial activator staphylokinase or by host-specific urokinase-type plasminogen activator to plasmin, which in turn leads to degradation of complement C3 and C3b. Efb and to a lesser extend Sbi enhance plasmin cleavage of C3/C3b, an effect which is explained by a conformational change in C3/C3b induced by Sbi and Efb. Furthermore, bound plasmin also degrades C3a, which exerts anaphylatoxic and antimicrobial activities. Thus, S. aureus Sbi and Efb comprise platforms to recruit plasmin(ogen) together with C3 and its activation product C3b for efficient degradation of these complement components in the local microbial environment and to protect S. aureus from host innate immune reactions.

Indexed as

Bacterial ProteinsBlotting, WesternCarrier ProteinsCloning, MolecularComplement C3Complement C3bComplement Inactivator ProteinsDNA PrimersEnzyme-Linked Immunosorbent AssayFibrinolysinHumansImmunity, InnatePlasminogenProteolysisStaphylococcus aureusSurface Plasmon ResonanceBacterial ProteinsCarrier ProteinsComplement C3Complement C3bComplement Inactivator ProteinsDNA PrimersEhp protein, Staphylococcus aureusFibrinolysinPlasminogenSbi protein, Staphylococcus aureus

Identifiers

PMID23071827
PMCPMC3469469
OpenAlexW2169011840

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.