Evidence map›Paper›PMID 11133953›Full record

ArticleJournal of bacteriology2001

Disulfide bond in Pseudomonas aeruginosa lipase stabilizes the structure but is not required for interaction with its foldase.

K Liebeton, A Zacharias, K E Jaeger

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 2001. 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
1.5field-weighted citation impact, top 18% 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, 75 citations in OpenAlex.

  1. Article
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  3. Chlorophyllase fromACS bio & med chem Au · 2024
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  6. Enhanced Prodigiosin Production inApplied and environmental microbiology · 2021
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  7. Functional Heterologous Expression of Mature Lipase LipA fromInternational journal of molecular sciences · 2020
    Article
  8. Journal of diabetes research · 2020
    Article
  9. Article
  10. Article
  11. An oxidant and organic solvent tolerant alkaline lipase by P. aeruginosa mutant: downstream processing and biochemical characterization.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2013
    Article
  12. Article
  13. Article
  14. Purification and characterization of extracellular lipase from a new strain: Pseudomonas aeruginosa SRT 9.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2009
    Article
  15. Article
  16. 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

3 authors at 1 institution in 1 country.

K LiebetonLehrstuhl für Biologie der Mikroorganismen, Ruhr-Universität Bochum, D-44780 Bochum, Germany.
A Zacharias
K E Jaeger
Ruhr University Bochum · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Pseudomonas aeruginosa secretes a 29-kDa lipase which is dependent for folding on the presence of the lipase-specific foldase Lif. The lipase contains two cysteine residues which form an intramolecular disulfide bond. Variant lipases with either one or both cysteines replaced by serines showed severely reduced levels of extracellular lipase activity, indicating the importance of the disulfide bond for secretion of lipase through the outer membrane. Wild-type and variant lipase genes fused to the signal sequence of pectate lyase from Erwinia carotovora were expressed in Escherichia coli, denatured by treatment with urea, and subsequently refolded in vitro. Enzymatically active lipase was obtained irrespective of the presence or absence of the disulfide bond, suggesting that the disulfide bond is required neither for correct folding nor for the interaction with the lipase-specific foldase. However, cysteine-to-serine variants were more readily denatured by treatment at elevated temperatures and more susceptible to proteolytic degradation by cell lysates of P. aeruginosa. These results indicate a stabilizing function of the disulfide bond for the active conformation of lipase. This conclusion was supported by the finding that the disulfide bond function could partly be substituted by a salt bridge constructed by changing the two cysteine residues to arginine and aspartate, respectively.

Indexed as

DisulfidesProteinsBiological TransportCysteineEnzyme StabilityInterleukin-6Leukemia Inhibitory FactorLipaseMolecular ChaperonesMutagenesis, Site-DirectedOxidation-ReductionProtein BindingProtein ConformationProtein FoldingPseudomonas aeruginosaSerineCysteineDisulfidesInterleukin-6Leukemia Inhibitory FactorLipaseMolecular ChaperonesProteinsSerine

Identifiers

PMID11133953
PMCPMC94915
OpenAlexW2164703797

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.