Evidence map›Paper›PMID 22006918›Full record

ArticleThe Journal of biological chemistry2011

Size and conformation limits to secretion of disulfide-bonded loops in autotransporter proteins.

Denisse L Leyton, Yanina R Sevastsyanovich, Douglas F Browning, Amanda E Rossiter, Timothy J Wells, Rebecca E Fitzpatrick, Michael Overduin, Adam F Cunningham, Ian R Henderson

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
6.6field-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

44 citing papers in PubMed, 78 citations in OpenAlex.

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  11. Properties of protein unfolded states suggest broad selection for expanded conformational ensembles.Proceedings of the National Academy of Sciences of the United States of America · 2020
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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

9 authors at 1 institution in 1 country.

Denisse L LeytonSchool of Immunity and Infection, University of Birmingham, Birmingham B15 2TT, United Kingdom.
Yanina R SevastsyanovichSchool of Immunity and Infection, University of Birmingham, Birmingham B15 2TT, United Kingdom.
Douglas F BrowningSchool of Immunity and Infection, University of Birmingham, Birmingham B15 2TT, United Kingdom.
Amanda E RossiterSchool of Immunity and Infection, University of Birmingham, Birmingham B15 2TT, United Kingdom.
Timothy J WellsSchool of Immunity and Infection, University of Birmingham, Birmingham B15 2TT, United Kingdom.
Rebecca E FitzpatrickSchool of Immunity and Infection, University of Birmingham, Birmingham B15 2TT, United Kingdom.
Michael OverduinSchool of Cancer Sciences, University of Birmingham, Birmingham B15 2TT, United Kingdom.
Adam F CunninghamSchool of Immunity and Infection, University of Birmingham, Birmingham B15 2TT, United Kingdom.
Ian R HendersonSchool of Immunity and Infection, University of Birmingham, Birmingham B15 2TT, United Kingdom. Electronic address: i.r.henderson@bham.ac.uk.
University of Birmingham · GB

Funding

Biotechnology and Biological Sciences Research Council BB/G022054/1Medical Research Council G0700151
6 · The paper itself

Abstract

Autotransporters are a superfamily of virulence factors typified by a channel-forming C terminus that facilitates translocation of the functional N-terminal passenger domain across the outer membrane of Gram-negative bacteria. This final step in the secretion of autotransporters requires a translocation-competent conformation for the passenger domain that differs markedly from the structure of the fully folded secreted protein. The nature of the translocation-competent conformation remains controversial, in particular whether the passenger domain can adopt secondary structural motifs, such as disulfide-bonded segments, while maintaining a secretion-competent state. Here, we used the endogenous and closely spaced cysteine residues of the plasmid-encoded toxin (Pet) from enteroaggregative Escherichia coli to investigate the effect of disulfide bond-induced folding on translocation of an autotransporter passenger domain. We reveal that rigid structural elements within disulfide-bonded segments are resistant to autotransporter-mediated secretion. We define the size limit of disulfide-bonded segments tolerated by the autotransporter system demonstrating that, when present, cysteine pairs are intrinsically closely spaced to prevent congestion of the translocator pore by large disulfide-bonded regions. These latter data strongly support the hairpin mode of autotransporter biogenesis.

Indexed as

Protein ConformationProtein Structure, TertiaryAmino Acid SequenceBacterial ToxinsBiological TransportCircular DichroismCysteineDisulfidesEscherichia coliEscherichia coli ProteinsMicroscopy, FluorescenceModels, MolecularMolecular ConformationMolecular Sequence DataMutationPlasmidsBacterial ToxinsCysteineDisulfidesEscherichia coli Proteins

Identifiers

PMID22006918
PMCPMC3234927
OpenAlexW2046089352

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.