Plant endosomal NHX antiporters: Activity and function
نویسندگان
چکیده
منابع مشابه
Differential expression and function of Arabidopsis thaliana NHX Na+/H+ antiporters in the salt stress response.
The Arabidopsis thaliana vacuolar Na+/H+ antiporter AtNHX1 is a salt tolerance determinant. Predicted amino acid sequence similarity, protein topology and the presence of functional domains conserved in AtNHX1 and prototypical mammalian NHE Na+/H+ exchangers led to the identification of five additional AtNHX genes (AtNHX2-6). The AtNHX1 and AtNHX2 mRNAs are the most prevalent transcripts among ...
متن کاملBacterial and plant antiporters.
Articles in this chapter emphasize the phenomenon of ion exchange across biomembranes. This topic has been of interest at least since 1947, when Hans Ussing articulated his model of ‘exchange diffusion’ to account for an unexpected elevation in the rate of 22Na+ efflux from skeletal muscle (Ussing, 1947). Ussing had tried to measure net Na+ movement by following tracer flux, but found that this...
متن کاملHow do vacuolar NHX exchangers function in plant salt tolerance?
Potassium (K(+)) is a major osmoticum of plant cells, and the vacuolar accumulation of this element is a especially crucial feature for plants under high-salt conditions. Emerging evidence indicates that cation/proton transporters of the NHX family are instrumental in the H(+)-linked K(+) transport that mediate active K(+) uptake at the tonoplast for the unequal partitioning of K(+) between vac...
متن کاملpH Regulation by NHX-Type Antiporters Is Required for Receptor-Mediated Protein Trafficking to the Vacuole in Arabidopsis.
Protein trafficking requires proper ion and pH homeostasis of the endomembrane system. The NHX-type Na(+)/H(+) antiporters NHX5 and NHX6 localize to the Golgi, trans-Golgi network, and prevacuolar compartments and are required for growth and trafficking to the vacuole. In the nhx5 nhx6 T-DNA insertional knockouts, the precursors of the 2S albumin and 12S globulin storage proteins accumulated an...
متن کاملPlant K+ channels: structure, activity and function.
Introduction In plants as in animals, K+ channel activity is the major determinant of cell membrane conductance [1,2]. Kt channels are therefore involved in central physiological processes such as setting the resting cell membrane potential, transducing signals and shaping action-potential waveforms. In addition, in plant cells, K t channel activity is thought to be involved in long-term fluxes...
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ژورنال
عنوان ژورنال: Plant Signaling & Behavior
سال: 2016
ISSN: 1559-2324
DOI: 10.1080/15592324.2016.1147643