Plasma Membrane H+-ATPase and 14-3-3 Isoforms of Arabidopsis Leaves: Evidence for Isoform Specificity in the 14-3-3/H+-ATPase Interaction
نویسندگان
چکیده
منابع مشابه
Phosphorylation-independent interaction between 14-3-3 protein and the plant plasma membrane H+-ATPase.
14-3-3 proteins interact with a novel phosphothreonine motif (Y(946)pTV) at the extreme C-terminal end of the plant plasma membrane H(+)-ATPase molecule. Phosphorylation-independent binding of 14-3-3 protein to the YTV motif can be induced by the fungal phytotoxin fusicoccin. The molecular basis for the phosphorylation-independent interaction between 14-3-3 and H(+)-ATPase in the presence of fu...
متن کاملPolyamines as physiological regulators of 14-3-3 interaction with the plant plasma membrane H+-ATPase.
Polyamines are abundant polycationic compounds involved in many plant physiological processes such as cell division, dormancy breaking, plant morphogenesis and response to environmental stresses. In this study, we investigated the possible role of these polycations in modulating the association of 14-3-3 proteins with the H(+)-ATPase. In vivo experiments demonstrate that, among the different po...
متن کاملSpecificity of ε and Non-ε Isoforms of Arabidopsis 14-3-3 Proteins Towards the H+-ATPase and Other Targets
14-3-3 proteins are a family of ubiquitous dimeric proteins that modulate many cellular functions in all eukaryotes by interacting with target proteins. 14-3-3s exist as a number of isoforms that in Arabidopsis identifies two major groups named ε and non-ε. Although isoform specificity has been demonstrated in many systems, the molecular basis for the selection of specific sequence contexts has...
متن کاملArabidopsis protein kinase PKS5 inhibits the plasma membrane H+ -ATPase by preventing interaction with 14-3-3 protein.
Regulation of the trans-plasma membrane pH gradient is an important part of plant responses to several hormonal and environmental cues, including auxin, blue light, and fungal elicitors. However, little is known about the signaling components that mediate this regulation. Here, we report that an Arabidopsis thaliana Ser/Thr protein kinase, PKS5, is a negative regulator of the plasma membrane pr...
متن کاملOsmoregulation in Lilium pollen grains occurs via modulation of the plasma membrane H+ ATPase activity by 14-3-3 proteins.
To allow successful germination and growth of a pollen tube, mature and dehydrated pollen grains (PGs) take up water and have to adjust their turgor pressure according to the water potential of the surrounding stigma surface. The turgor pressure of PGs of lily (Lilium longiflorum) was measured with a modified pressure probe for simultaneous recordings of turgor pressure and membrane potential t...
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ژورنال
عنوان ژورنال: Plant and Cell Physiology
سال: 2004
ISSN: 1471-9053,0032-0781
DOI: 10.1093/pcp/pch136