Evidence map›Paper›PMID 34936154›Full record

ArticleProtein science : a publication of the Protein Society2022

A novel violet fluorescent protein contains a unique oxidized tyrosine as the simplest chromophore ever reported in fluorescent proteins.

Abigail Roldán-Salgado, Liya Muslinkina, Sergei Pletnev, Nadya Pletneva, Vladimir Pletnev, Paul Gaytán

Erratum issuedAbstract read
In one paragraph

Article in Protein science : a publication of the Protein Society, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–field-weighted citation impact
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

4 citing papers in PubMed.

  1. Absolute quantification of fluorescent protein fusions by mass spectrometry.Protein science : a publication of the Protein Society · 2026
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors.

Abigail Roldán-SalgadoInstituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Mexico.
Liya MuslinkinaStructural Biology Section, Research Technologies Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA.
Sergei PletnevVaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA.
Nadya PletnevaShemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russian Federation.
Vladimir PletnevShemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russian Federation.
Paul GaytánInstituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Mexico.ORCID 0000-0001-9408-365X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We describe an engineered violet fluorescent protein from the lancelet Branchiostoma floridae (bfVFP). This is the first example of a GFP-like fluorescent protein with a stable fluorescent chromophore lacking an imidazolinone ring; instead, it consists of oxidized tyrosine 68 flanked by glycine 67 and alanine 69. bfVFP contains the simplest chromophore reported in fluorescent proteins and was generated from the yellow protein lanFP10A2 by two synergetic mutations, S148H and C166I. The chromophore structure was confirmed crystallographically and by high-resolution mass spectrometry. The photophysical characteristics of bfVFP (323/430 nm, quantum yield 0.33, and E

Indexed as

Fluorescence Resonance Energy TransferTyrosineAlanineGreen Fluorescent ProteinsLuminescent ProteinsMutationAlanineGreen Fluorescent ProteinsLuminescent ProteinsTyrosinechromophorecrystal structurefluorescent proteingene reporterlanceletmutagenesisprotein engineering

Identifiers

PMID34936154
PMCPMC8862416

What OpenQuestion holds

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Registered trials

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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.