Evidence map›Paper›PMID 22093611›Full record

ArticleAnalytical biochemistry2012

Chromophore maturation and fluorescence fluctuation spectroscopy of fluorescent proteins in a cell-free expression system.

Patrick J Macdonald, Yan Chen, Joachim D Mueller

Open access · greenAbstract read
In one paragraph

Article in Analytical biochemistry, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
1.8field-weighted citation impact, top 13% 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

31 citing papers in PubMed, 59 citations in OpenAlex.

  1. Article
  2. Absolute quantification of fluorescent protein fusions by mass spectrometry.Protein science : a publication of the Protein Society · 2026
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  13. SystematicACS synthetic biology · 2022
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  16. Nanoparticle-based local translation reveals mRNA as a translation-coupled scaffold with anchoring function.Proceedings of the National Academy of Sciences of the United States of America · 2019
    Article
  17. Article
  18. A new mechanism of voltage-dependent gating exposed by KThe Journal of general physiology · 2017
    Article
  19. Investigating State Restriction in Fluorescent Protein FRET Using Time-Resolved Fluorescence and Anisotropy.The journal of physical chemistry. C, Nanomaterials and interfaces · 2017
    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

3 authors at 1 institution in 1 country.

Patrick J MacdonaldDepartment of Biomedical Engineering, University of Minnesota, Minneapolis, MN 55455, USA.
Yan Chen
Joachim D Mueller
University of Minnesota · US

Funding

In vivo Fluorescence Fluctuation Spectroscopy - Administrative SupplementR01GM064589 · NIGMS · UNIVERSITY OF MINNESOTA TWIN CITIES · PI MUELLER, JOACHIM D · 2002 to 2019
$4.6M
NIGMS NIH HHS GM64589NIGMS NIH HHS R01 GM064589
6 · The paper itself

Abstract

Cell-free synthesis, a method for the rapid expression of proteins, is increasingly used to study interactions of complex biological systems. GFP and its variants have become indispensable for fluorescence studies in live cells and are equally attractive as reporters for cell-free systems. This work investigates the use of fluorescence fluctuation spectroscopy (FFS) as a tool for quantitative analysis of protein interactions in cell-free expression systems. We also explore chromophore maturation of fluorescent proteins, which is of crucial importance for fluorescence studies. A droplet sample protocol was developed that ensured sufficient oxygenation for chromophore maturation and ease of manipulation for titration studies. The kinetics of chromophore maturation of EGFP, EYFP, and mCherry were analyzed as a function of temperature. A strong increase in the rate from room temperature to 37°C was observed. We further demonstrate that all EGFP proteins fully mature in the cell-free solution and that brightness is a robust parameter specifying stoichiometry. Finally, FFS is applied to study the stoichiometry of the nuclear transport factor 2 in a cell-free system over a broad concentration range. We conclude that combining cell-free expression and FFS provides a powerful technique for quick, quantitative study of chromophore maturation and protein-protein interaction.

Indexed as

Cell-Free SystemEscherichia coliFluorescent DyesGreen Fluorescent ProteinsHumansIn Vitro TechniquesNucleocytoplasmic Transport ProteinsPregnancy ProteinsRecombinant ProteinsSpectrometry, Fluorescenceenhanced green fluorescent proteinFluorescent DyesGreen Fluorescent ProteinsNucleocytoplasmic Transport ProteinsNUTF2 protein, humanPregnancy ProteinsRecombinant Proteins

Identifiers

PMID22093611
PMCPMC3367886
OpenAlexW2010129927

What OpenQuestion holds

Textmetadata
LicenceTDM
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.