ArticleBiophysical journal1997
Plant K+ channel alpha-subunits assemble indiscriminately.
Article in Biophysical journal, 1997. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 53 papers.
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Who cites it
53 citing papers in PubMed.
- AKT5 is a bona fide potassium channel and controls petiole growth inScience advances · 2026Article
- Research Progress on Plant Shaker KPlants (Basel, Switzerland) · 2024Review
- Structural basis for the activity regulation of a potassium channel AKT1 from Arabidopsis.Nature communications · 2022Article
- Homologous Cloning of Potassium Channel Genes From the Superior Apple Rootstock Line 12-2, Which is Tolerant to Apple Replant Disease.Frontiers in genetics · 2022Article
- Structural and Functional Insights into the Role of Guard Cell Ion Channels in Abiotic Stress-Induced Stomatal Closure.Plants (Basel, Switzerland) · 2021Review
- Analysis of Arabidopsis TPK2 and KCO3 reveals structural properties required for KChannels (Austin, Tex.) · 2020Article
- Identification of Shaker KPlanta · 2019Article
- Unique features of the grapevine VvK5.1 channel support novel functions for outward K+ channels in plants.Journal of experimental botany · 2019Article
- BCL2-ASSOCIATED ATHANOGENE4 Regulates the KAT1 Potassium Channel and Controls Stomatal Movement.Plant physiology · 2019Article
- The Complex Fine-Tuning of K⁺ Fluxes in Plants in Relation to Osmotic and Ionic Abiotic Stresses.International journal of molecular sciences · 2019Review
- Regulation of KFrontiers in plant science · 2019Review
- Evolution and Structural Characteristics of Plant Voltage-Gated KThe Plant cell · 2018Review
- Identification of regions responsible for the function of the plant KChannels (Austin, Tex.) · 2017Article
- S-type Anion Channels SLAC1 and SLAH3 Function as Essential Negative Regulators of Inward K+ Channels and Stomatal Opening in Arabidopsis.The Plant cell · 2016Article
- PIP Water Transport and Its pH Dependence Are Regulated by Tetramer Stoichiometry.Biophysical journal · 2016Article
- Lost in traffic? The K(+) channel of lily pollen, LilKT1, is detected at the endomembranes inside yeast cells, tobacco leaves, and lily pollen.Frontiers in plant science · 2015Article
- Evaluating contribution of ionic, osmotic and oxidative stress components towards salinity tolerance in barley.BMC plant biology · 2014Article
- Distinct amino acids in the C-linker domain of the Arabidopsis K+ channel KAT2 determine its subcellular localization and activity at the plasma membrane.Plant physiology · 2014Article
- Involvement of the S4-S5 linker and the C-linker domain regions to voltage-gating in plant Shaker channels: comparison with animal HCN and Kv channels.Plant signaling & behavior · 2014Review
- A suppressor screen of the chimeric AtCNGC11/12 reveals residues important for intersubunit interactions of cyclic nucleotide-gated ion channels.Plant physiology · 2013Article
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Authors and funding
8 authors.
Funding
Abstract
In plants a large diversity of inwardly rectifying K+ channels (K(in) channels) has been observed between tissues and species. However, only three different types of voltage-dependent plant K+ uptake channel subfamilies have been cloned so far; they relate either to KAT1, AKT1, or AtKC1. To explore the mechanisms underlying the channel diversity, we investigated the assembly of plant inwardly rectifying alpha-subunits. cRNA encoding five different K+ channel alpha-subunits of the three subfamilies (KAT1, KST1, AKT1, SKT1, and AtKC1) which were isolated from different tissues, species, and plant families (Arabidopsis thaliana and Solanum tuberosum) was reciprocally co-injected into Xenopus oocytes. We identified plant K+ channels as multimers. Moreover, using K+ channel mutants expressing different sensitivities to voltage, Cs+, Ca2+, and H+, we could prove heteromers on the basis of their altered voltage and modulator susceptibility. We discovered that, in contrast to animal K+ channel alpha-subunits, functional aggregates of plant K(in) channel alpha-subunits assembled indiscriminately. Interestingly, AKT-type channels from A. thaliana and S. tuberosum, which as homomers were electrically silent in oocytes after co-expression, mediated K+ currents. Our findings suggest that K+ channel diversity in plants results from nonselective heteromerization of different alpha-subunits, and thus depends on the spatial segregation of individual alpha-subunit pools and the degree of temporal overlap and kinetics of expression.
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