Evidence map›Paper›PMID 19746358›Full record

ArticleProtein science : a publication of the Protein Society2009

Production of functional bacteriorhodopsin by an Escherichia coli cell-free protein synthesis system supplemented with steroid detergent and lipid.

Kazumi Shimono, Mie Goto, Takashi Kikukawa, Seiji Miyauchi, Mikako Shirouzu, Naoki Kamo, Shigeyuki Yokoyama

Open access · bronzeAbstract read
In one paragraph

Article in Protein science : a publication of the Protein Society, 2009. 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
3.1field-weighted citation impact, top 8% 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, 62 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. International journal of molecular sciences · 2020
    Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Allosteric regulation of γ-secretase activity by a phenylimidazole-type γ-secretase modulator.Proceedings of the National Academy of Sciences of the United States of America · 2014
    Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. 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

7 authors at 2 institutions in 1 country.

Kazumi ShimonoRIKEN Systems and Structural Biology Center, Yokohama, Japan.
Mie Goto
Takashi Kikukawa
Seiji Miyauchi
Mikako Shirouzu
Naoki Kamo
Shigeyuki Yokoyama
Systems Biology Institute · JPHokkaido University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cell-free expression has become a highly promising tool for the efficient production of membrane proteins. In this study, we used a dialysis-based Escherichia coli cell-free system for the production of a membrane protein actively integrated into liposomes. The membrane protein was the light-driven proton pump bacteriorhodopsin, consisting of seven transmembrane alpha-helices. The cell-free expression system in the dialysis mode was supplemented with a combination of a detergent and a natural lipid, phosphatidylcholine from egg yolk, in only the reaction mixture. By examining a variety of detergents, we found that the combination of a steroid detergent (digitonin, cholate, or CHAPS) and egg phosphatidylcholine yielded a large amount (0.3-0.7 mg/mL reaction mixture) of the fully functional bacteriorhodopsin. We also analyzed the process of functional expression in our system. The synthesized polypeptide was well protected from aggregation by the detergent-lipid mixed micelles and/or lipid disks, and was integrated into liposomes upon detergent removal by dialysis. This approach might be useful for the high yield production of functional membrane proteins.

Indexed as

Protein BiosynthesisBacteriorhodopsinsCholatesCholic AcidsDigitoninEscherichia coliLiposomesPhosphatidylcholines3-((3-cholamidopropyl)dimethylammonium)-1-propanesulfonateBacteriorhodopsinsCholatesCholic AcidsDigitoninLiposomesPhosphatidylcholines

Identifiers

PMID19746358
PMCPMC2786979
OpenAlexW1994422702

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.