Evidence map›Paper›PMID 11226340›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2001

Chlorophyll and carotenoid binding in a simple red algal light-harvesting complex crosses phylogenetic lines.

B Grabowski, F X Cunningham, E Gantt

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
2.7field-weighted citation impact, top 10% 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

13 citing papers in PubMed, 65 citations in OpenAlex.

  1. Article
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  12. Chlorophyll b can serve as the major pigment in functional photosystem II complexes of cyanobacteria.Proceedings of the National Academy of Sciences of the United States of America · 2001
    Article
  13. Was "molecular opportunism" a factor in the evolution of different photosynthetic light-harvesting pigment systems?Proceedings of the National Academy of Sciences of the United States of America · 2001
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

B GrabowskiDepartment of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD 20742, USA.
F X Cunningham
E Gantt
University of Maryland, College Park · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The membrane proteins of peripheral light-harvesting complexes (LHCs) bind chlorophylls and carotenoids and transfer energy to the reaction centers for photosynthesis. LHCs of chlorophytes, chromophytes, dinophytes, and rhodophytes are similar in that they have three transmembrane regions and several highly conserved Chl-binding residues. All LHCs bind Chl a, but in specific taxa certain characteristic pigments accompany Chl a: Chl b and lutein in chlorophytes, Chl c and fucoxanthin in chromophytes, Chl c and peridinin in dinophytes, and zeaxanthin in rhodophytes. The specificity of pigment binding was examined by in vitro reconstitution of various pigments with a simple light-harvesting protein (LHCaR1), from a red alga (Porphyridium cruentum), that normally has eight Chl a and four zeaxanthin molecules. The pigments typical of a chlorophyte (Spinacea oleracea), a chromophyte (Thallasiosira fluviatilis), and a dinophyte (Prorocentrum micans) were found to functionally bind to this protein as evidenced by their participation in energy transfer to Chl a, the terminal pigment. This is a demonstration of a functional relatedness of rhodophyte and higher plant LHCs. The results suggest that eight Chl-binding sites per polypeptide are an ancestral trait, and that the flexibility to bind various Chl and carotenoid pigments may have been retained throughout the evolution of LHCs.

Indexed as

Amino Acid SequenceCarotenoidsChlorophyllChromatography, High Pressure LiquidLight-Harvesting Protein ComplexesMolecular Sequence DataPhotosynthetic Reaction Center Complex ProteinsPhylogenyPigments, BiologicalRhodophytaCarotenoidsChlorophyllLight-Harvesting Protein ComplexesPhotosynthetic Reaction Center Complex ProteinsPigments, Biological

Identifiers

PMID11226340
PMCPMC30239
OpenAlexW2114926491

What OpenQuestion holds

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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.