Evidence map›Paper›PMID 19533768›Full record

ArticleProtein science : a publication of the Protein Society2009

Fusion order controls expression level and activity of elastin-like polypeptide fusion proteins.

Trine Christensen, Miriam Amiram, Sue Dagher, Kimberly Trabbic-Carlson, Mohammed F Shamji, Lori A Setton, Ashutosh Chilkoti

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 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
3.8field-weighted citation impact, top 6% 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, 88 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. Article
  5. Engineering synthetic biomolecular condensates.Nature reviews bioengineering · 2023
    Review
  6. Article
  7. Anti-CD99 scFv-ELP nanoworms for the treatment of acute myeloid leukemia.Nanomedicine : nanotechnology, biology, and medicine · 2020
    Article
  8. Anti-FLT3 nanoparticles for acute myeloid leukemia: Preclinical pharmacology and pharmacokinetics.Journal of controlled release : official journal of the Controlled Release Society · 2020
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Elastin-like polypeptides: Therapeutic applications for an emerging class of nanomedicines.Journal of controlled release : official journal of the Controlled Release Society · 2016
    Review
  16. Fabricated Elastin.Advanced healthcare materials · 2015
    Review
  17. A depot-forming glucagon-like peptide-1 fusion protein reduces blood glucose for five days with a single injection.Journal of controlled release : official journal of the Controlled Release Society · 2013
    Article
  18. Elastin-based protein polymer nanoparticles carrying drug at both corona and core suppress tumor growth in vivo.Journal of controlled release : official journal of the Controlled Release Society · 2013
    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

7 authors at 3 institutions in 2 countries.

Trine ChristensenDepartment of Biomedical Engineering, Duke University, Durham, North Carolina 27708, USA.
Miriam Amiram
Sue Dagher
Kimberly Trabbic-Carlson
Mohammed F Shamji
Lori A Setton
Ashutosh Chilkoti
Duke University · USDuke Medical Center · USOttawa Hospital · CA

Funding

ELASTIN FUSION PROTEINSR01GM061232 · NIGMS · DUKE UNIVERSITY · PI CHILKOTI, ASHUTOSH · 2000 to 2017
$4.6M
NIGMS NIH HHS GM061232
6 · The paper itself

Abstract

We have previously developed a method to purify recombinant proteins, termed inverse transition cycling (ITC) that eliminates the need for column chromatography. ITC exploits the inverse solubility phase transition of an elastin-like polypeptide (ELP) that is fused to a protein of interest. In ITC, a recombinant ELP fusion protein is cycled through its phase transition, resulting in separation of the ELP fusion protein from other Escherichia coli contaminants. Herein, we examine the role of the position of the ELP in the fusion protein on the expression levels and yields of purified protein for four recombinant ELP fusion proteins. Placing the ELP at the C-terminus of the target protein (protein-ELP) results in a higher expression level for the four ELP fusion proteins, which also translates to a greater yield of purified protein. The position of the fusion protein also has a significant impact on its specific activity, as ELP-protein constructs have a lower specific activity than protein-ELP constructs for three out of the four proteins. Our results show no difference in mRNA levels between protein-ELP and ELP-protein fusion constructs. Instead, we suggest two possible explanations for these results: first, the translational efficiency of mRNA may differ between the fusion protein in the two orientations and second, the lower level of protein expression and lower specific activity is consistent with a scenario that placement of the ELP at the N-terminus of the fusion protein increases the fraction of misfolded, and less active conformers, which are also preferentially degraded compared to fusion proteins in which the ELP is present at the C-terminal end of the protein.

Indexed as

CentrifugationCloning, MolecularElastinEscherichia coliGene ExpressionInclusion BodiesLuminescent ProteinsPeptidesRecombinant Fusion ProteinsRNA, MessengerSodium ChlorideTemperatureTranscription, Geneticblue fluorescent protein, Aequorea victoriaElastinelastin polypentapeptideLuminescent ProteinsPeptidesRecombinant Fusion ProteinsRNA, MessengerSodium Chloride

Identifiers

PMID19533768
PMCPMC2775208
OpenAlexW2160635698

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.