Evidence map›Paper›PMID 9684898›Full record

ArticleProtein science : a publication of the Protein Society1998

An internal affinity-tag for purification and crystallization of the siderophore receptor FhuA, integral outer membrane protein from Escherichia coli K-12.

A D Ferguson, J Breed, K Diederichs, W Welte, J W Coulton

Open access · bronzeAbstract read
In one paragraph

Article in Protein science : a publication of the Protein Society, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.2field-weighted citation impact, top 20% 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

12 citing papers in PubMed, 48 citations in OpenAlex.

  1. Article
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  5. Small angle neutron scattering for the study of solubilised membrane proteins.The European physical journal. E, Soft matter · 2013
    Review
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  12. Prediction by a neural network of outer membrane beta-strand protein topology.Protein science : a publication of the Protein Society · 1998
    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

5 authors at 2 institutions in 2 countries.

A D FergusonDepartment of Microbiology and Immunology, McGill University, Montreal, Quebec, Canada.
J Breed
K Diederichs
W Welte
J W Coulton
University of Konstanz · DEMcGill University · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

FhuA (Mr 78,992, 714 amino acids), siderophore receptor for ferrichrome-iron in the outer membrane of Escherichia coli, was affinity tagged, rapidly purified, and crystallized. To obtain FhuA in quantities sufficient for crystallization, a hexahistidine tag was genetically inserted into the fhuA gene after amino acid 405, which resides in a known surface-exposed loop. Recombinant FhuA405.H6 was overexpressed in an E. coli strain that is devoid of several major porins and using metal-chelate chromatography was purified in large amounts to homogeneity. FhuA crystals were grown using the hanging drop vapor diffusion technique and were suitable for X-ray diffraction analysis. On a rotating anode X-ray source, diffraction was observed to 3.0 A resolution. The crystals belong to space group P6(1) or P6(5) with unit cell dimensions of a=b=174 A, c=88 A (alpha=beta=90 degrees, gamma=120 degrees).

Indexed as

Escherichia coli ProteinsBacterial Outer Membrane ProteinsChelating AgentsChromatography, AffinityCrystallizationCrystallography, X-RayEscherichia coliFerrichromeHistidineIronNickelProtein ConformationProtein EngineeringReceptors, VirusRecombinant ProteinsBacterial Outer Membrane ProteinsChelating AgentsEscherichia coli ProteinsFerrichromeFhuA protein, E coliHistidineIronNickelReceptors, VirusRecombinant Proteins

Identifiers

PMID9684898
PMCPMC2144053
OpenAlexW2124274290

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.