Evidence map›Paper›PMID 24504114›Full record

ArticlePloS one2014

Isolation, purification and properties of an R-Phycocyanin from the phycobilisomes of a marine red macroalga Polysiphonia urceolata.

Lu Wang, Yanyan Qu, Xuejun Fu, Mingri Zhao, Shumei Wang, Li Sun

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in PloS one, 2014. 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 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.7field-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

14 citing papers in PubMed, 48 citations in OpenAlex.

  1. Antioxidant Efficacy of aMarine drugs · 2022
    Trial
  2. Review
  3. Probing the structural stability of R-phycocyanin under pressure.Protein science : a publication of the Protein Society · 2024
    Article
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  5. Article
  6. Review
  7. Review
  8. Review
  9. Article
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  11. Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Lu WangCollege of Life Sciences, Yantai University, Yantai, Shandong, People's Republic of China.
Yanyan QuCollege of Life Sciences, Yantai University, Yantai, Shandong, People's Republic of China.
Xuejun FuCollege of Life Sciences, Yantai University, Yantai, Shandong, People's Republic of China.
Mingri ZhaoCollege of Life Sciences, Yantai University, Yantai, Shandong, People's Republic of China.
Shumei WangCollege of Photo-Electronic Information Science and Technology, Yantai University, Yantai, People's Republic of China.
Li SunCollege of Life Sciences, Yantai University, Yantai, Shandong, People's Republic of China.
Yantai University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Phycobilisomes were prepared from a marine red macroalga Polysiphonia urceolata (P. urceolata) by sucrose step-gradient ultracentrifugation. From the prepared phycobilisomes, an R-phycocyanin was isolated by gel filtration on Sephadex G-150 and then purified by ion exchange chromatography on DEAE-Sepharose Fast Flow and native polyacrylamide gel electrophoresis (PAGE) performed in neutral buffer systems. The purified R-phycocyanins showed not only a homogeneous trimer of 136 kDa in gel filtration and a single band in native PAGE, but also exhibited one band at about pH 5.7 in native isoelectric focusing (IEF). By a gradient SDS-PAGE the purified R-phycocyanin was determined to contain one α subunit of 17.5 kDa (α (17.5)) and two β subunits of 21.3 kDa and 22.6 kDa (β (21.3) and β (22.6)). The analysis from denaturing isoelectric focusing and two-dimension PAGE demonstrated that α (17.5), β (21.3) and β (22.6) had their pIs of 6.4, 5.3 and 5.4, respectively. Furthermore, mass spectroscopy analysis of β (21.3) and β (22.6) by MALDI-TOF mass spectrometry demonstrated the two β subunits had differences in peptide mass fingerprinting. These results revealed that the prepared R-phycocyanins were composed of one α and two β subunits. and , which have a structural foundation to show their pIs too close for them to be definitely resolved by native IEF, are postulated to be the most possible trimeric forms of the R-phycocyanins prepared from the phycobilisomes of P. urceolata.

Indexed as

ChinaChromatography, Ion ExchangeElectrophoresis, Polyacrylamide GelMass SpectrometryPeptidesPhycobilisomesPhycocyaninRhodophytaSpectrometry, FluorescencePeptidesPhycobilisomesPhycocyanin

Identifiers

PMID24504114
PMCPMC3913688
OpenAlexW1998183241

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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.