Evidence map›Paper›PMID 28459876›Full record

ArticlePloS one2017

Alternative oxidase (AOX) constitutes a small family of proteins in Citrus clementina and Citrus sinensis L. Osb.

Jacqueline Araújo Castro, Monique Drielle Gomes Ferreira, Raner José Santana Silva, Bruno Silva Andrade, Fabienne Micheli

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.7field-weighted citation impact, top 31% 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

6 citing papers in PubMed, 15 citations in OpenAlex.

  1. Genome-Wide Identification and Characterization ofPlants (Basel, Switzerland) · 2024
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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

5 authors at 4 institutions in 2 countries.

Jacqueline Araújo CastroUniversidade Estadual de Santa Cruz (UESC), Centro de Biotecnologia e Genética (CBG), Ilhéus, Bahia, Brazil.
Monique Drielle Gomes FerreiraUniversidade Estadual de Santa Cruz (UESC), Centro de Biotecnologia e Genética (CBG), Ilhéus, Bahia, Brazil.
Raner José Santana SilvaUniversidade Estadual de Santa Cruz (UESC), Centro de Biotecnologia e Genética (CBG), Ilhéus, Bahia, Brazil.
Bruno Silva AndradeUniversidade Estadual Sudoeste da Bahia (UESB), Av. José Moreira Sobrinho, Jequié, Bahia, Brazil.
Fabienne MicheliUniversidade Estadual de Santa Cruz (UESC), Centro de Biotecnologia e Genética (CBG), Ilhéus, Bahia, Brazil.ORCID http://orcid.org/0000-0002-9031-362X
Universidade Estadual de Santa Cruz · BRCentre de Coopération Internationale en Recherche Agronomique pour le Développement · FRInstituto Federal de Educação, Ciência e Tecnologia Baiano · BRSouthwest Bahia State University · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The alternative oxidase (AOX) protein is present in plants, fungi, protozoa and some invertebrates. It is involved in the mitochondrial respiratory chain, providing an alternative route for the transport of electrons, leading to the reduction of oxygen to form water. The present study aimed to characterize the family of AOX genes in mandarin (Citrus clementina) and sweet orange (Citrus sinensis) at nucleotide and protein levels, including promoter analysis, phylogenetic analysis and C. sinensis gene expression. This study also aimed to do the homology modeling of one AOX isoform (CcAOXd). Moreover, the molecular docking of the CcAOXd protein with the ubiquinone (UQ) was performed. Four AOX genes were identified in each citrus species. These genes have an open reading frame (ORF) ranging from 852 bp to 1150 bp and a number of exons ranging from 4 to 9. The 1500 bp-upstream region of each AOX gene contained regulatory cis-elements related to internal and external response factors. CsAOX genes showed a differential expression in citrus tissues. All AOX proteins were predicted to be located in mitochondria. They contained the conserved motifs LET, NERMHL, LEEEA and RADE-H as well as several putative post-translational modification sites. The CcAOXd protein was modeled by homology to the AOX of Trypanosona brucei (45% of identity). The 3-D structure of CcAOXd showed the presence of two hydrophobic helices that could be involved in the anchoring of the protein in the inner mitochondrial membrane. The active site of the protein is located in a hydrophobic environment deep inside the AOX structure and contains a diiron center. The molecular docking of CcAOXd with UQ showed that the binding site is a recessed pocket formed by the helices and submerged in the membrane. These data are important for future functional studies of citrus AOX genes and/or proteins, as well as for biotechnological approaches leading to AOX inhibition using UQ homologs.

Indexed as

Alternative OxidaseAmino Acid SequenceCitrusConserved SequenceExonsGene Expression Regulation, PlantHydrophobic and Hydrophilic InteractionsMitochondriaMitochondrial ProteinsMolecular Docking SimulationOxidoreductasesPhylogenyPlant ProteinsPlant StructuresPromoter Regions, GeneticProtein Processing, Post-TranslationalAlternative OxidaseMitochondrial ProteinsOxidoreductasesPlant ProteinsUbiquinone

Identifiers

PMID28459876
PMCPMC5411082
OpenAlexW2611471245

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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.