ArticleBMC plant biology2015
Oep23 forms an ion channel in the chloroplast outer envelope.
Article in BMC plant biology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 25 citations in OpenAlex.
- The Name Is Barrel, β-Barrel.Methods in molecular biology (Clifton, N.J.) · 2024Article
- The Main Functions of Plastids.Methods in molecular biology (Clifton, N.J.) · 2024Review
- Probing the physiological role of the plastid outer-envelope membrane using the oemiR plasmid collection.G3 (Bethesda, Md.) · 2023Article
- Structural basis of metabolite transport by the chloroplast outer envelope channel OEP21.Nature structural & molecular biology · 2023Article
- Pepper mild mottle virus coat protein interacts with pepper chloroplast outer envelope membrane protein OMP24 to inhibit antiviral immunity in plants.Horticulture research · 2023Article
- OMPdb: A Global Hub of Beta-Barrel Outer Membrane Proteins.Frontiers in bioinformatics · 2021Article
- Identification of Chloroplast Envelope Proteins with Critical Importance for Cold Acclimation.Plant physiology · 2020Article
- The Puzzle of Metabolite Exchange and Identification of Putative Octotrico Peptide Repeat Expression Regulators in the Nascent Photosynthetic Organelles ofFrontiers in microbiology · 2020Article
- Properties and Phylogeny of 76 Families of Bacterial and Eukaryotic Organellar Outer Membrane Pore-Forming Proteins.PloS one · 2016Article
- Emerging knowledge of the organelle outer membranes - research snapshots and an updated list of the chloroplast outer envelope proteins.Frontiers in plant science · 2015Article
- Ion Channels in Native Chloroplast Membranes: Challenges and Potential for Direct Patch-Clamp Studies.Frontiers in physiology · 2015Review
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundMetabolite, ion and protein translocation into chloroplasts occurs across two membranes, the inner and the outer envelope. Solute and metabolite channels fulfill very important functions in integrating the organelles into the metabolic network of the cell. However so far only a few have been identified. Here we describe the identification and the characterization of the outer envelope protein of 23 kDa, Oep23 from garden pea.
resultsOep23 is found in the entire plant lineage from green algae to flowering plants. It is expressed in all organs and developmental states tested so far. The reconstituted recombinant protein Oep23 from pea forms a high conductance ion channel with a maximal conductance in the fully open state of 466 ± 14pS at a holding potential of +100 mV (in 250 mM KCl). The Oep23 channel is cation selective (PK+ : PCl- = 15 : 1) with a voltage dependent open probability of maximal Vmem = 0 mV.
conclusionThe data indicate that the Oep23 activity represents a single channel unit and does not assemble into a multiple pore complex like bacterial type porins or mitochondrial voltage dependent anion channel. Thus, Oep23 represents a new member of ion channels in the outer envelope of chloroplasts involved in solute exchange.
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