Evidence map›Paper›PMID 21937437›Full record

ArticleThe Journal of biological chemistry2011

Preparative scale cell-free production and quality optimization of MraY homologues in different expression modes.

Yi Ma, Daniela Münch, Tanja Schneider, Hans-Georg Sahl, Ahmed Bouhss, Umesh Ghoshdastider, Jufang Wang, Volker Dötsch, Xiaoning Wang, Frank Bernhard

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
6.5field-weighted citation impact, top 3% 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

22 citing papers in PubMed, 60 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. International journal of molecular sciences · 2020
    Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Review
  17. Review
  18. Article
  19. Article
  20. Fluorescent probe for high-throughput screening of membrane protein expression.Protein science : a publication of the Protein Society · 2013
    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

10 authors at 4 institutions in 2 countries.

Yi MaSchool of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, China.
Daniela Münch
Tanja Schneider
Hans-Georg Sahl
Ahmed Bouhss
Umesh Ghoshdastider
Jufang Wang
Volker Dötsch
Xiaoning Wang
Frank Bernhard
Goethe University Frankfurt · DEUniversity of Bonn · DEBioscience (China) · CNSouth China University of Technology · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

MraY translocase catalyzes the first committed membrane-bound step of bacterial peptidoglycan synthesis leading to the formation of lipid I. The essential membrane protein therefore has a high potential as target for drug screening approaches to develop antibiotics against gram-positive as well as gram-negative bacteria. However, the production of large integral membrane proteins in conventional cellular expression systems is still very challenging. Cell-free expression technologies have been optimized in recent times for the production of membrane proteins in the presence of detergents (D-CF), lipids (L-CF), or as precipitates (P-CF). We report the development of preparative scale production protocols for the MraY homologues of Escherichia coli and Bacillus subtilis in all three cell-free expression modes followed by their subsequent quality evaluation. Although both proteins can be cell-free produced at comparable high levels, their requirements for optimal expression conditions differ markedly. B. subtilus MraY was stably folded in all three expression modes and showed highest translocase activities after P-CF production followed by defined treatment with detergents. In contrast, the E. coli MraY appears to be unstable after post- or cotranslational solubilization in detergent micelles. Expression kinetics and reducing conditions were identified as optimization parameters for the quality improvement of E. coli MraY. Most remarkably, in contrast to B. subtilis MraY the E. coli MraY has to be stabilized by lipids and only the production in the L-CF mode in the presence of preformed liposomes resulted in stable and translocase active protein samples.

Indexed as

Bacillus subtilisEscherichia coliGene ExpressionProtein FoldingBacterial ProteinsCell-Free SystemKineticsRecombinant ProteinsTransferasesTransferases (Other Substituted Phosphate Groups)Bacterial ProteinsmraY protein, BacteriaRecombinant ProteinsTransferasesTransferases (Other Substituted Phosphate Groups)

Identifiers

PMID21937437
PMCPMC3234709
OpenAlexW2074286208

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.