Evidence map›Paper›PMID 25074929›Full record

ArticleThe Journal of biological chemistry2014

The collagen-like protein gp12 is a temperature-dependent reversible binder of SPP1 viral capsids.

Mohamed Zairi, Asita C Stiege, Naima Nhiri, Eric Jacquet, Paulo Tavares

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
0.9field-weighted citation impact, top 23% 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

10 citing papers in PubMed, 17 citations in OpenAlex.

  1. Article
  2. Deciphering the folding code of collagens.Nature communications · 2025
    Article
  3. Article
  4. Temporal compartmentalization of viral infection in bacterial cells.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Thermal-Stability and Reconstitution Ability ofFrontiers in microbiology · 2017
    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 3 institutions in 2 countries.

Mohamed ZairiUnité de Virologie Moléculaire et Structurale, UPR 3296 CNRS, Centre de Recherche de Gif, 91190 Gif-sur-Yvette, France.
Asita C StiegeMax Planck Institute for Molecular Genetics, Ihnestrasse 73, 14195 Berlin, Germany.
Naima NhiriInstitut de Chimie des Substances Naturelles, UPR 2301 CNRS, Centre de Recherche de Gif, Gif-sur-Yvette, France, and.
Eric JacquetInstitut de Chimie des Substances Naturelles, UPR 2301 CNRS, Centre de Recherche de Gif, Gif-sur-Yvette, France, and; IMAGIF CTPF and qPCR Platform, Centre de Recherche de Gif, 91190 Gif-sur-Yvette, France.
Paulo TavaresUnité de Virologie Moléculaire et Structurale, UPR 3296 CNRS, Centre de Recherche de Gif, 91190 Gif-sur-Yvette, France,. Electronic address: tavares@vms.cnrs-gif.fr.
Centre National de la Recherche Scientifique · FRInstitut de Chimie des Substances Naturelles · FRMax Planck Institute for Molecular Genetics · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Icosahedral capsids of viruses are lattices of defined geometry and homogeneous size. The (quasi-)equivalent organization of their protein building blocks provides, in numerous systems, the binding sites to assemble arrays of viral polypeptides organized with nanometer precision that protrude from the capsid surface. The capsid of bacterial virus (bacteriophage) SPP1 exposes, at its surface, the 6.6-kDa viral polypeptide gp12 that binds to the center of hexamers of the major capsid protein. Gp12 forms an elongated trimer with collagen-like properties. This is consistent with the fold of eight internal GXY repeats of gp12 to build a stable intersubunit triple helix in a prokaryotic setting. The trimer dissociates and unfolds at near physiological temperatures, as reported for eukaryotic collagen. Its structural organization is reacquired within seconds upon cooling. Interaction with the SPP1 capsid hexamers strongly stabilizes gp12, increasing its Tm to 54 °C. Above this temperature, gp12 dissociates from its binding sites and unfolds reversibly. Multivalent binding of gp12 trimers to the capsid is highly cooperative. The capsid lattice also provides a platform to assist folding and association of unfolded gp12 polypeptides. The original physicochemical properties of gp12 offer a thermoswitchable system for multivalent binding of the polypeptide to the SPP1 capsid surface.

Indexed as

Bacillus PhagesCapsidProtein StabilityProtein Structure, SecondaryViral Structural ProteinsViral Structural ProteinsAuxiliary ProteinBacteriophageCollagenProtein FoldingThermal DenaturationViral CapsidVirus AssemblyVirus Structure

Identifiers

PMID25074929
PMCPMC4175352
OpenAlexW1971022694

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.