Evidence map›Paper›PMID 20829359›Full record

ArticleThe Journal of biological chemistry2010

Relevant elements of a maize gamma-zein domain involved in protein body biogenesis.

Immaculada Llop-Tous, Sergio Madurga, Ernest Giralt, Pablo Marzabal, Margarita Torrent, M Dolors Ludevid

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
5.7field-weighted citation impact, top 5% 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

33 citing papers in PubMed, 55 citations in OpenAlex.

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  14. Advances in Plant-Derived Scaffold Proteins.Frontiers in plant science · 2020
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  15. Characterization and Immunogenicity of HIV Envelope gp140 ZeraFrontiers in bioengineering and biotechnology · 2020
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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

6 authors at 4 institutions in 1 country.

Immaculada Llop-TousCentre de Recerca en Agrigenòmica, Consejo Superior de Investigaciones Científicas, Jordi Girona 18-26, 08034 Barcelona, Spain.
Sergio Madurga
Ernest Giralt
Pablo Marzabal
Margarita Torrent
M Dolors Ludevid
Center for Research in Agricultural Genomics · ESConsejo Superior de Investigaciones Científicas · ESInstitute for Research in Biomedicine · ESUniversitat de Barcelona · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The N-terminal proline-rich domain of γ-zein (Zera) plays an important role in protein body (PB) formation not only in the original host (maize seeds) but in a broad spectrum of eukaryotic cells. However, the elements within the Zera sequence that are involved in the biogenesis of PBs have not been clearly identified. Here, we focused on amino acid sequence motifs that could be involved in Zera oligomerization, leading to PB-like structures in Nicotiana benthamiana leaves. By using fusions of Zera with fluorescent proteins, we found that the lack of the repeat region (PPPVHL)(8) of Zera resulted in the secretion of the fusion protein but that this repeat by itself did not form PBs. Although the repeat region containing eight units was the most efficient for Zera self-assembly, shorter repeats of 4-6 units still formed small multimers. Based on site-directed mutagenesis of Zera cysteine residues and analysis of multimer formation, we conclude that the two N-terminal Cys residues of Zera (Cys(7) and Cys(9)) are critical for oligomerization. Immunoelectron microscopy and confocal studies on PB development over time revealed that early, small, Zera-derived oligomers were sequestered in buds along the rough ER and that the mature size of the PBs could be attained by both cross-linking of preformed multimers and the incorporation of new chains of Zera fusions synthesized by active membrane-bound ribosomes. Based on these results and on the behavior of the Zera structure determined by molecular dynamics simulation studies, we propose a model of Zera-induced PB biogenesis.

Indexed as

Amino Acid SequenceBinding SitesBlotting, WesternEndoplasmic ReticulumFluorescence Recovery After PhotobleachingGene Expression Regulation, PlantGreen Fluorescent ProteinsMicroscopy, ImmunoelectronModels, BiologicalModels, MolecularMolecular Dynamics SimulationMolecular Sequence DataMutationNicotianaOrganellesPlant Proteinsenhanced cyan fluorescent proteinGreen Fluorescent ProteinsPlant ProteinsRecombinant Fusion ProteinsZein

Identifiers

PMID20829359
PMCPMC2975188
OpenAlexW1995948234

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.