Evidence map›Paper›PMID 29335634›Full record

ArticleScientific reports2018

The PII signaling protein from red algae represents an evolutionary link between cyanobacterial and Chloroplastida PII proteins.

Tatyana Lapina, Khaled A Selim, Karl Forchhammer, Elena Ermilova

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
1.4field-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

18 citing papers in PubMed, 33 citations in OpenAlex.

  1. Article
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  3. International journal of molecular sciences · 2026
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  6. N-Acetyl-L-glutamate Kinase ofInternational journal of molecular sciences · 2023
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  17. PProceedings of the National Academy of Sciences of the United States of America · 2018
    Article
  18. The PFrontiers in molecular biosciences · 2018
    Review
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

4 authors at 2 institutions in 2 countries.

Tatyana LapinaBiological Faculty, Saint-Petersburg State University, Universitetskaya nab. 7/9, Saint-Petersburg, 199034, Russia.
Khaled A SelimInterfaculty Institute of Microbiology and Infection Medicine/Organismic Interactions Department, Eberhard-Karls-Universität Tübingen, Auf der Morgenstelle 28, 72076, Tübingen, Germany.
Karl ForchhammerInterfaculty Institute of Microbiology and Infection Medicine/Organismic Interactions Department, Eberhard-Karls-Universität Tübingen, Auf der Morgenstelle 28, 72076, Tübingen, Germany. karl.forchhammer@uni-tuebingen.de.ORCID http://orcid.org/0000-0003-3199-8101
Elena ErmilovaBiological Faculty, Saint-Petersburg State University, Universitetskaya nab. 7/9, Saint-Petersburg, 199034, Russia. e.ermilova@spbu.ru.
St Petersburg University · RUUniversity of Tübingen · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

PII superfamily consists of widespread signal transduction proteins found in all domains of life. Whereas they are well-studied in Archaea, Bacteria and Chloroplastida, no PII homolog has been analyzed in Rhodophyta (red algae), where PII is encoded by a chloroplast localized glnB gene. Here, we characterized relevant sensory properties of PII from the red alga Porphyra purpurea (PpPII) in comparison to PII proteins from different phyla of oxygenic phototrophs (cyanobacteria, Chlamydomonas and Physcomitrella) to assess evolutionary conservation versus adaptive properties. Like its cyanobacterial counterparts, PpPII binds ATP/ADP and 2-oxoglutarate in synergy with ATP. However, green algae and land plant PII proteins lost the ability to bind ADP. In contrast to PII proteins from green algae and land plants, PpPII enhances the activity of N-acetyl-L-glutamate kinase (NAGK) and relieves it from feedback inhibition by arginine in a glutamine-independent manner. Like PII from Chloroplastida, PpPII is not able to interact with the cyanobacterial transcriptional co-activator PipX. These data emphasize the conserved role of NAGK as a major PII-interactor throughout the evolution of oxygenic phototrophs, and confirms the specific role of PipX for cyanobacteria. Our results highlight the PII signaling system in red algae as an evolutionary intermediate between Cyanobacteria and Chlorophyta.

Indexed as

Evolution, MolecularAlgal ProteinsAmino Acid SequenceBacterial ProteinsCalorimetryChlamydomonasChloroplastsCyanobacteriaKetoglutaric AcidsKineticsPhosphotransferases (Carboxyl Group Acceptor)PII Nitrogen Regulatory ProteinsProtein BindingRhodophytaSequence AlignmentSignal Transductionacetylglutamate kinaseAlgal ProteinsBacterial ProteinsKetoglutaric AcidsPhosphotransferases (Carboxyl Group Acceptor)PII Nitrogen Regulatory Proteins

Identifiers

PMID29335634
PMCPMC5768801
OpenAlexW2783135910

What OpenQuestion holds

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LicenceCC BY
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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.