Evidence map›Paper›PMID 11133952›Full record

ArticleJournal of bacteriology2001

DsbA and DsbC affect extracellular enzyme formation in Pseudomonas aeruginosa.

A Urban, M Leipelt, T Eggert, 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 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
2.9field-weighted citation impact, top 9% 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

30 citing papers in PubMed, 71 citations in OpenAlex.

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  5. Using Structure-guided Fragment-Based Drug Discovery to TargetFrontiers in molecular biosciences · 2022
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  7. Functional Heterologous Expression of Mature Lipase LipA fromInternational journal of molecular sciences · 2020
    Article
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  9. Review
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  15. Article
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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

4 authors at 1 institution in 1 country.

A UrbanLehrstuhl für Biologie der Mikroorganismen, Ruhr-Universität Bochum, D-44780 Bochum, Germany.
M Leipelt
T Eggert
K E Jaeger
Ruhr University Bochum · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

DsbA and DsbC proteins involved in the periplasmic formation of disulfide bonds in Pseudomonas aeruginosa were identified and shown to play an important role for the formation of extracellular enzymes. Mutants deficient in either dsbA or dsbC or both genes were constructed, and extracellular elastase, alkaline phosphatase, and lipase activities were determined. The dsbA mutant no longer produced these enzymes, whereas the lipase activity was doubled in the dsbC mutant. Also, extracellar lipase production was severely reduced in a P. aeruginosa dsbA mutant in which an inactive DsbA variant carrying the mutation C34S was expressed. Even when the lipase gene lipA was constitutively expressed in trans in a lipA dsbA double mutant, lipase activity in cell extracts and culture supernatants was still reduced to about 25%. Interestingly, the presence of dithiothreitol in the growth medium completely inhibited the formation of extracellular lipase whereas the addition of dithiothreitol to a cell-free culture supernatant did not affect lipase activity. We conclude that the correct formation of the disulfide bond catalyzed in vivo by DsbA is necessary to stabilize periplasmic lipase. Such a stabilization is the prerequisite for efficient secretion using the type II pathway.

Indexed as

Bacterial ProteinsAlkaline PhosphataseCloning, MolecularEnzyme StabilityGenetic Complementation TestLipaseMetalloendopeptidasesMolecular Sequence DataMovementMutationProtein Disulfide-IsomerasesProtein SubunitsPseudomonas aeruginosaAlkaline PhosphataseBacterial ProteinsLipaseMetalloendopeptidasesProtein Disulfide-IsomerasesProtein Subunitspseudolysin, Pseudomonas aeruginosa

Identifiers

PMID11133952
PMCPMC94914
OpenAlexW2113442929

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.