Evidence map›Paper›PMID 25803609›Full record

ArticlePloS one2015

The bactofilin cytoskeleton protein BacM of Myxococcus xanthus forms an extended β-sheet structure likely mediated by hydrophobic interactions.

David M Zuckerman, Lauren E Boucher, Kefang Xie, Harald Engelhardt, Jürgen Bosch, Egbert Hoiczyk

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
1.0field-weighted citation impact, top 26% 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

16 citing papers in PubMed, 60 citations in OpenAlex.

  1. Article
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  5. Halofilins as emerging bactofilin families of archaeal cell shape plasticity orchestrators.Proceedings of the National Academy of Sciences of the United States of America · 2024
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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

6 authors at 2 institutions in 2 countries.

David M ZuckermanW. Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America.
Lauren E BoucherDepartment of Biochemistry and Molecular Biology, Johns Hopkins Bloomberg School of Public Health and Johns Hopkins Malaria Research Institute, Baltimore, Maryland, United States of America.
Kefang XieW. Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America.
Harald EngelhardtDepartment of Structural Biology, Max Planck Institute of Biochemistry, Am Klopferspitz 18, Martinsried, Germany.
Jürgen BoschDepartment of Biochemistry and Molecular Biology, Johns Hopkins Bloomberg School of Public Health and Johns Hopkins Malaria Research Institute, Baltimore, Maryland, United States of America.
Egbert HoiczykW. Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America.
Johns Hopkins University · USMax Planck Institute of Biochemistry · DE

Funding

Training: Molecular & Cellular Bases of Infectious DiseasesT32AI007417 · NIAID · JOHNS HOPKINS UNIVERSITY · PI Arturo Casadevall · 1994 to 2026
$11.9M
The Chemistry-Biology Interface Program at Johns Hopkins UniversityT32GM080189 · NIGMS · JOHNS HOPKINS UNIVERSITY · PI ROKITA, STEVEN E · 2008 to 2022
$3.5M
Novel ParP Pilus of Myxococcus XanthusR01GM085024 · NIGMS · JOHNS HOPKINS UNIVERSITY · PI HOICZYK, EGBERT · 2008 to 2012
$1.6M
NIAID NIH HHS T32 AI007417NIAID NIH HHS T32AI007417NIGMS NIH HHS GM85024NIGMS NIH HHS R01 GM085024NIGMS NIH HHS T32 GM080189NIGMS NIH HHS T32GM080189
6 · The paper itself

Abstract

Bactofilins are novel cytoskeleton proteins that are widespread in Gram-negative bacteria. Myxococcus xanthus, an important predatory soil bacterium, possesses four bactofilins of which one, BacM (Mxan_7475) plays an important role in cell shape maintenance. Electron and fluorescence light microscopy, as well as studies using over-expressed, purified BacM, indicate that this protein polymerizes in vivo and in vitro into ~3 nm wide filaments that further associate into higher ordered fibers of about 10 nm. Here we use a multipronged approach combining secondary structure determination, molecular modeling, biochemistry, and genetics to identify and characterize critical molecular elements that enable BacM to polymerize. Our results indicate that the bactofilin-determining domain DUF583 folds into an extended β-sheet structure, and we hypothesize a left-handed β-helix with polymerization into 3 nm filaments primarily via patches of hydrophobic amino acid residues. These patches form the interface allowing head-to-tail polymerization during filament formation. Biochemical analyses of these processes show that folding and polymerization occur across a wide variety of conditions and even in the presence of chaotropic agents such as one molar urea. Together, these data suggest that bactofilins are comprised of a structure unique to cytoskeleton proteins, which enables robust polymerization.

Indexed as

Hydrophobic and Hydrophilic InteractionsMyxococcus xanthusAmino Acid MotifsAmino Acid SequenceBacterial ProteinsCytoskeletal ProteinsModels, MolecularMolecular Sequence DataProtein MultimerizationProtein Structure, TertiarySequence AnalysisSurface PropertiesBacterial ProteinsCytoskeletal Proteins

Identifiers

PMID25803609
PMCPMC4372379
OpenAlexW2077912835

What OpenQuestion holds

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LicenceCC BY
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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.