Evidence map›Paper›PMID 16156646›Full record

ArticleBiochemistry2005

Design of amphiphilic protein maquettes: controlling assembly, membrane insertion, and cofactor interactions.

Bohdana M Discher, Dror Noy, Joseph Strzalka, Shixin Ye, Christopher C Moser, James D Lear, J Kent Blasie, P Leslie Dutton

Open access · greenAbstract read
In one paragraph

Article in Biochemistry, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
2.0field-weighted citation impact, top 15% 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

27 citing papers in PubMed, 64 citations in OpenAlex.

  1. Review
  2. Article
  3. Cellular production of a de novo membrane cytochrome.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  4. Review
  5. Article
  6. Designing minimalist membrane proteins.Biochemical Society transactions · 2019
    Review
  7. Article
  8. Review
  9. Article
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Review
  17. Modulation of function in a minimalist heme-binding membrane protein.Journal of biological inorganic chemistry : JBIC : a publication of the Society of Biological Inorganic Chemistry · 2012
    Article
  18. Engineering enzymes.Faraday discussions · 2011
    Article
  19. Article
  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

8 authors at 2 institutions in 1 country.

Bohdana M DischerJohnson Research Foundation, Department of Biochemistry and Biophysics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. bohdana@mail.med.upenn.edu
Dror Noy
Joseph Strzalka
Shixin Ye
Christopher C Moser
James D Lear
J Kent Blasie
P Leslie Dutton
University of Pennsylvania · USJohnson Foundation · US

Funding

Vibrational and Optical Probes of Electric Fields in ProteinsP01GM048130 · NIGMS · UNIVERSITY OF PENNSYLVANIA · PI VANDERKOOI, JANE MARIE · 1993 to 2007
$7.3M
Engineering of Proton PumpsF32GM063388 · NIGMS · UNIVERSITY OF PENNSYLVANIA · PI DISCHER, BOHDANA M · 2001 to 2002
$90k
NIGMS NIH HHS F32 GM063388NIGMS NIH HHS GM48130NIGMS NIH HHS GM63388NIGMS NIH HHS P01 GM048130
6 · The paper itself

Abstract

We have designed polypeptides combining selected lipophilic (LP) and hydrophilic (HP) sequences that assemble into amphiphilic (AP) alpha-helical bundles to reproduce key structure characteristics and functional elements of natural membrane proteins. The principal AP maquette (AP1) developed here joins 14 residues of a heme binding sequence from a structured diheme-four-alpha-helical bundle (HP1), with 24 residues of a membrane-spanning LP domain from the natural four-alpha-helical M2 channel of the influenza virus, through a flexible linking sequence (GGNG) to make a 42 amino acid peptide. The individual AP1 helices (without connecting loops) assemble in detergent into four-alpha-helical bundles as observed by analytical ultracentrifugation. The helices are oriented parallel as indicated by interactions typical of adjacent hemes. AP1 orients vectorially at nonpolar-polar interfaces and readily incorporates into phospholipid vesicles with >97% efficiency, although most probably without vectorial bias. Mono- and diheme-AP1 in membranes enhance functional elements well established in related HP analogues. These include strong redox charge coupling of heme with interior glutamates and internal electric field effects eliciting a remarkable 160 mV splitting of the redox potentials of adjacent hemes that leads to differential heme binding affinities. The AP maquette variants, AP2 and AP3, removed heme-ligating histidines from the HP domain and included heme-ligating histidines in LP domains by selecting the b(H) heme binding sequence from the membrane-spanning d-helix of respiratory cytochrome bc(1). These represent the first examples of AP maquettes with heme and bacteriochlorophyll binding sites located within the LP domains.

Indexed as

Protein Structure, SecondaryBinding SitesHemeKineticsMembrane ProteinsModels, MolecularMolecular Sequence DataOxidation-ReductionPeptidesHemeMembrane ProteinsPeptides

Identifiers

PMID16156646
PMCPMC2574520
OpenAlexW2064872769

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.