Evidence map›Paper›PMID 25760699›Full record

ArticleActa crystallographica. Section F, Structural biology communications2015

Production, crystallization and X-ray diffraction analysis of a complex between a fragment of the TssM T6SS protein and a camelid nanobody.

Van Son Nguyen, Silvia Spinelli, Aline Desmyter, Thi Thu Hang Le, Christine Kellenberger, Eric Cascales, Christian Cambillau, Alain Roussel

Open access · greenAbstract read
In one paragraph

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 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
1.0field-weighted citation impact, top 25% 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

6 citing papers in PubMed, 8 citations in OpenAlex.

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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

8 authors at 3 institutions in 1 country.

Van Son NguyenArchitecture et Fonction des Macromolécules Biologiques, CNRS, Campus de Luminy, Case 932, 13288 Marseille, France.
Silvia SpinelliArchitecture et Fonction des Macromolécules Biologiques, CNRS, Campus de Luminy, Case 932, 13288 Marseille, France.
Aline DesmyterArchitecture et Fonction des Macromolécules Biologiques, CNRS, Campus de Luminy, Case 932, 13288 Marseille, France.
Thi Thu Hang LeArchitecture et Fonction des Macromolécules Biologiques, CNRS, Campus de Luminy, Case 932, 13288 Marseille, France.
Christine KellenbergerArchitecture et Fonction des Macromolécules Biologiques, CNRS, Campus de Luminy, Case 932, 13288 Marseille, France.
Eric CascalesLaboratoire d'Ingénierie des Systèmes Macromoléculaires, Institut de Microbiologie de la Méditerranée, CNRS and Aix-Marseille Université, 31 Chemin Joseph Aiguier, 13402 Marseille, France.
Christian CambillauArchitecture et Fonction des Macromolécules Biologiques, CNRS, Campus de Luminy, Case 932, 13288 Marseille, France.
Alain RousselArchitecture et Fonction des Macromolécules Biologiques, CNRS, Campus de Luminy, Case 932, 13288 Marseille, France.
Centre National de la Recherche Scientifique · FRAix-Marseille Université · FRArchitecture et Fonction des Macromolécules Biologiques · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The type VI secretion system (T6SS) is a machine evolved by Gram-negative bacteria to deliver toxin effectors into target bacterial or eukaryotic cells. The T6SS is functionally and structurally similar to the contractile tail of the Myoviridae family of bacteriophages and can be viewed as a syringe anchored to the bacterial membrane by a transenvelope complex. The membrane complex is composed of three proteins: the TssM and TssL inner membrane components and the TssJ outer membrane lipoprotein. The TssM protein is central as it interacts with both TssL and TssJ, therefore linking the membranes. Using controlled trypsinolysis, a 32.4 kDa C-terminal fragment of enteroaggregative Escherichia coli TssM (TssM32Ct) was purified. A nanobody obtained from llama immunization, nb25, exhibited subnanomolar affinity for TssM32Ct. Crystals of the TssM32Ct-nb25 complex were obtained and diffracted to 1.9 Å resolution. The crystals belonged to space group P64, with unit-cell parameters a = b = 95.23, c = 172.95 Å. Molecular replacement with a model nanobody indicated the presence of a dimer of TssM32Ct-nb25 in the asymmetric unit.

Indexed as

Amino Acid SequenceAnimalsBacterial Secretion SystemsCamelids, New WorldCrystallizationCrystallography, X-RayEscherichia coliEscherichia coli ProteinsMembrane ProteinsMolecular Sequence DataPeptide FragmentsSingle-Domain AntibodiesBacterial Secretion SystemsEscherichia coli ProteinsMembrane ProteinsPeptide FragmentsSingle-Domain AntibodiesTssM protein, E colinb25TssMtype VI secretion system

Identifiers

PMID25760699
PMCPMC4356300
OpenAlexW2072016303

What OpenQuestion holds

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Registered trials

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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.