Evidence map›Paper›PMID 21047084›Full record

ArticleThe journal of physical chemistry. B2010

On the origin of fluorescence in bacteriophytochrome infrared fluorescent proteins.

Alex A Samma, Chelsea K Johnson, Shuang Song, Samuel Alvarez, Marc Zimmer

Abstract read
In one paragraph

Article in The journal of physical chemistry. B, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
1.2field-weighted citation impact, top 17% 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

8 citing papers in PubMed, 15 citations in OpenAlex.

  1. Article
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  5. Blue protein with red fluorescence.Proceedings of the National Academy of Sciences of the United States of America · 2016
    Article
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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

5 authors at 1 institution in 1 country.

Alex A SammaChemistry Department, Connecticut College, New London, CT 06320, USA.
Chelsea K Johnson
Shuang Song
Samuel Alvarez
Marc Zimmer
Connecticut College · US

Funding

Understanding and finding new fluorescent proteinsR15GM059108 · NIGMS · CONNECTICUT COLLEGE · PI ZIMMER, MARC · 1999 to 2009
$478k
NIGMS NIH HHS R15 GM059108NIGMS NIH HHS R15 GM59108-02
6 · The paper itself

Abstract

Tsien et al. (Science, 2009, 324, 804-807) recently reported the creation of the first infrared fluorescent protein (IFP). It was engineered from bacterial phytochrome by removing the PHY and histidine kinase-related domains, by optimizing the protein to prevent dimerization, and by limiting the biliverdins conformational freedom, especially around its D ring. We have used database analyses and molecular dynamics simulations with freely rotating chromophoric dihedrals in order to model the dihedral freedom available to the biliverdin D ring in the excited state and to show that the tetrapyrrole ligands in phytochromes are flexible and can adopt many conformations; however, their conformational space is limited/defined by the chemospatial characteristics of the protein cavity. Our simulations confirm that the reduced accessibility to conformations geared to an excited state proton transfer may be responsible for the fluorescence in IFP, just as has been suggested by Kennis et al. (Proc. Natl. Acad. Sci. U.S.A., 2010, 107, 9170-9175) for fluorescent bacteriophytochrome from Rhodopseudomonas palustris.

Indexed as

Infrared RaysBacterial ProteinsBiliverdineCatalytic DomainFluorescenceLuminescent ProteinsModels, MolecularMolecular Dynamics SimulationMolecular StructureProtein ConformationRhodopseudomonasBacterial ProteinsBiliverdineLuminescent Proteins

Identifiers

PMID21047084
PMCPMC2993020
OpenAlexW1975943569

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.