Evidence map›Paper›PMID 18791005›Full record

ArticleApplied and environmental microbiology2008

Mutational analysis of the class IIa bacteriocin curvacin A and its orientation in target cell membranes.

Helén Sophie Haugen, Per Eugen Kristiansen, Gunnar Fimland, Jon Nissen-Meyer

Open access · greenAbstract read
In one paragraph

Article in Applied and environmental microbiology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
2.0field-weighted citation impact, top 16% 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

8 citing papers in PubMed, 19 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Bacteriocins of lactic acid bacteria: extending the family.Applied microbiology and biotechnology · 2016
    Review
  5. Article
  6. Article
  7. Article
  8. Helix insertion into bilayers and the evolution of membrane proteins.Cellular and molecular life sciences : CMLS · 2010
    Review
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 at 1 institution in 1 country.

Helén Sophie HaugenDepartment of Molecular Biosciences, University of Oslo, Oslo, Norway. h.s.haugen@imbv.uio.no
Per Eugen Kristiansen
Gunnar Fimland
Jon Nissen-Meyer
University of Oslo · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

To analyze the orientation in target cell membranes of the pediocin-like bacteriocin (antimicrobial peptide) curvacin A, 55 variants were generated by site-directed mutagenesis and their potencies against four different target cells determined. The result suggest that the somewhat hydrophilic short central helix (residues 19 to 24), along with the N-terminal beta-sheet-like structure (residues 1 to 16), inserts in the interface region of the target cell membrane, with Ala22 close to the hydrophobic core of the membrane. The following hinge region, with Gly28 as an important residue, may then form a turn wherein Gly28 becomes positioned near the border between the interface and the hydrophobic regions, thus permitting the longer and more-hydrophobic C-terminal helix (residues 29 to 41) to insert into the hydrophobic core of the membrane. This helix contains three glycine residues (G33, G37, and G40) that form a putative helix-helix-interacting GxxxGxxG motif. The replacement of any of these glycines with a larger residue was very detrimental, suggesting their possible involvement in helix-helix interactions with a membrane-embedded receptor protein.

Indexed as

Anti-Bacterial AgentsBacteriocinsCell MembraneDNA Mutational AnalysisMicrobial Sensitivity TestsModels, BiologicalModels, MolecularMutagenesis, Site-DirectedProtein Structure, TertiarySequence AlignmentSequence Homology, Amino AcidAnti-Bacterial AgentsBacteriocinssakacin A

Identifiers

PMID18791005
PMCPMC2576708
OpenAlexW2156230956

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.