Evidence map›Paper›PMID 25615979›Full record

ArticleActa crystallographica. Section F, Structural biology communications2015

Purification, crystallization and preliminary X-ray diffraction analysis of SpaD, a backbone-pilin subunit encoded by the fimbrial spaFED operon in Lactobacillus rhamnosus GG.

Priyanka Chaurasia, Ingemar von Ossowski, Airi Palva, Vengadesan Krishnan

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Article in Acta crystallographica. Section F, Structural biology communications, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

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0cells of the map it votes in
8citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

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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

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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

8 citing papers in PubMed.

  1. Article
  2. LrpCBA pilus proteins of gut-dwelling Ligilactobacillus ruminis: crystallization and X-ray diffraction analysis.Acta crystallographica. Section F, Structural biology communications · 2021
    Article
  3. Article
  4. Article
  5. Article
  6. Novel Molecular Insights about Lactobacillar Sortase-Dependent Piliation.International journal of molecular sciences · 2017
    Review
  7. Article
  8. 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

4 authors.

Priyanka ChaurasiaRegional Centre for Biotechnology, Gurgaon, Haryana 122 016, India.
Ingemar von OssowskiDepartment of Veterinary Biosciences, University of Helsinki, Helsinki, Finland.
Airi PalvaDepartment of Veterinary Biosciences, University of Helsinki, Helsinki, Finland.
Vengadesan KrishnanRegional Centre for Biotechnology, Gurgaon, Haryana 122 016, India.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

SpaD is the predicted backbone-pilin subunit of the SpaFED pilus, whose loci are encoded by the fimbrial spaFED operon in Lactobacillus rhamnosus GG, a Gram-positive gut-adapted commensal strain with perceived probiotic benefits. In this study, soluble recombinant SpaD protein was overproduced in Escherichia coli and then purified by Ni2+-chelating affinity and gel-filtration chromatography. After limited proteolysis with α-chymotrypsin, good-quality crystals of SpaD were obtained which diffracted beyond 2.0 Å resolution. These crystals belonged to the orthorhombic space group P2(1)2(1)2(1), with unit-cell parameters a=50.11, b=83.27, c=149.65 Å. For phasing, sodium iodide-derivatized crystals were prepared using the halide quick-soaking method and diffraction data were collected in-house to a resolution of 2.2 Å. An interpretable electron-density map was successfully obtained using single-wavelength anomalous diffraction (SAD).

Indexed as

Chromatography, GelChymotrypsinCrystallizationCrystallography, X-RayFimbriae, BacterialFimbriae ProteinsGenes, BacterialLacticaseibacillus rhamnosusOperonProteolysisChymotrypsinFimbriae Proteinsadhesionfimbriain-house iodide SAD phasingLactobacillus rhamnosus GGlimited proteolysisSpaFED pili

Identifiers

PMID25615979
PMCPMC4304758

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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.