Evidence map›Paper›PMID 1708384›Full record

ArticleJournal of bacteriology1991

Membrane topography of ColE1 gene products: the immunity protein.

H Y Song, W A Cramer

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 1991. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
3.4field-weighted citation impact, top 7% 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

21 citing papers in PubMed, 61 citations in OpenAlex.

  1. Article
  2. Colicin biology.Microbiology and molecular biology reviews : MMBR · 2007
    Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Membrane topology and insertion of membrane proteins: search for topogenic signals.Microbiology and molecular biology reviews : MMBR · 2000
    Review
  9. Article
  10. Article
  11. Article
  12. Review
  13. Review
  14. Topology prediction of membrane proteins.Protein science : a publication of the Protein Society · 1996
    Article
  15. Immunity to lantibiotics.Antonie van Leeuwenhoek · 1996
    Review
  16. Article
  17. Bacteriocins of gram-positive bacteria.Microbiological reviews · 1995
    Review
  18. Article
  19. Review
  20. 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

2 authors at 1 institution in 1 country.

H Y SongDepartment of Biological Sciences, Purdue University, West Lafayette, Indiana 47907.
W A Cramer
Purdue University West Lafayette · US

Funding

THE MECHANISM OF ACTION OF COLICIN E1R01GM018457 · NIGMS · PURDUE UNIVERSITY WEST LAFAYETTE · PI CRAMER, WILLIAM A. · 1985 to 2007
$2.2M
NIGMS NIH HHS GM-18457
6 · The paper itself

Abstract

The topography of the colicin E1 immunity (Imm) protein was determined from the positions of TnphoA and complementary lacZ fusions relative to the three long hydrophobic segments of the protein and site-directed substitution of charged for nonpolar residues in the proposed membrane-spanning segments. Inactivation of the Imm protein function required substitution and insertion of two such charges. It was concluded that the 113-residue colicin E1 Imm protein folds in the membrane as three trans-membrane alpha-helices, with the NH2 and COOH termini on the cytoplasmic and periplasmic sides of the membrane, respectively. The approximate spans of the three helices are Asn-9 to Ser-28, Ile-43 to Phe-62, and Leu-84 to Leu-104. An extrinsic highly charged segment, Lys-66 to Lys-74, containing seven charges in nine residues, extends into the cytoplasmic domain. The specificity of the colicin E1 Imm protein for interaction with the translocation apparatus and the colicin E1 ion channel is proposed to reside in its peripheral segments exposed on the surface of the inner membrane. These regions include the highly charged segment Lys-66 to Lys-83 (loop 2) and the short (approximately eight-residue) NH2 terminus on the cytoplasmic side, and Glu-29 to Val-44 (loop 1) and the COOH-terminal segment Gly-105 to Asn-113 on the periplasmic side.

Indexed as

Alkaline PhosphataseAmino Acid SequenceBacterial Proteinsbeta-GalactosidaseBiological TransportCell MembraneCloning, MolecularColicinsIon ChannelsModels, BiologicalMolecular Sequence DataMutagenesis, InsertionalMutagenesis, Site-DirectedPlasmidsSequence Homology, Nucleic AcidAlkaline PhosphataseBacterial Proteinsbeta-Galactosidasecolicin immunity proteinsColicinsIon Channels

Identifiers

PMID1708384
PMCPMC207876
OpenAlexW2125981438

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.