Evidence map›Paper›PMID 21071442›Full record

ArticleThe Journal of biological chemistry2011

Fluorescence of phytochrome adducts with synthetic locked chromophores.

Benjamin Zienicke, Li-Yi Chen, Htoi Khawn, Mostafa A S Hammam, Hideki Kinoshita, Johannes Reichert, Anne S Ulrich, Katsuhiko Inomata, Tilman Lamparter

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 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.5field-weighted citation impact, top 19% 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

12 citing papers in PubMed, 21 citations in OpenAlex.

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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

9 authors at 2 institutions in 2 countries.

Benjamin ZienickeBotanical Institute, Karlsruhe Institute of Technology, Campus South, Kaiserstrasse 2, D-76131 Karlsruhe, Germany.
Li-Yi Chen
Htoi Khawn
Mostafa A S Hammam
Hideki Kinoshita
Johannes Reichert
Anne S Ulrich
Katsuhiko Inomata
Tilman Lamparter
Kanazawa University · JPKarlsruhe Institute of Technology · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We performed steady state fluorescence measurements with phytochromes Agp1 and Agp2 of Agrobacterium tumefaciens and three mutants in which photoconversion is inhibited. These proteins were assembled with the natural chromophore biliverdin (BV), with phycoerythrobilin (PEB), which lacks a double bond in the ring C-D-connecting methine bridge, and with synthetic bilin derivatives in which the ring C-D-connecting methine bridge is locked. All PEB and locked chromophore adducts are photoinactive. According to fluorescence quantum yields, the adducts may be divided into four different groups: wild type BV adducts exhibiting a weak fluorescence, mutant BV adducts with about 10-fold enhanced fluorescence, adducts with locked chromophores in which the fluorescence quantum yields are around 0.02, and PEB adducts with a high quantum yield of around 0.5. Thus, the strong fluorescence of the PEB adducts is not reached by the locked chromophore adducts, although the photoconversion energy dissipation pathway is blocked. We therefore suggest that ring D of the bilin chromophore, which contributes to the extended π-electron system of the locked chromophores, provides an energy dissipation pathway that is independent on photoconversion.

Indexed as

Agrobacterium tumefaciensBacterial ProteinsBiliverdineFluorescenceFluorescent DyesMutagenesis, Site-DirectedPhotochemistryPhycobilinsPhycoerythrinPhytochromeProtein Structure, TertiaryBacterial ProteinsBiliverdineFluorescent DyesPhycobilinsPhycoerythrinphycoerythrobilinPhytochrome

Identifiers

PMID21071442
PMCPMC3020717
OpenAlexW2063373337

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.