Tonoplast K+ channels in Arabidopsis thaliana are activated by cytoplasmic ATP.
The effect of ATP on the slow vacuolar cation channels in the tonoplast of suspension-cultured cells of Arabidopsis thaliana L. was examined using the patch clamp technique in the whole-vacuole configuration. The channels were specifically activated by cytoplasmic ATP, other nucleotides (ADP, GTP and nonhydrolizable ATP analogues) being ineffective.
Colombo
R
R
Dipartimento di Biologia, Università degli Studi di Milano, Italy.
Cerana
R
R
Giromini
L
L
D000227:Adenine Nucleotides / Q000494:pharmacology; D000255:Adenosine Triphosphate / Q000378:metabolism* / Q000494:pharmacology; D017360:Arabidopsis / Q000378:metabolism*; D003593:Cytoplasm / Q000378:metabolism; D004553:Electric Conductivity; D006160:Guanosine Triphosphate / Q000494:pharmacology; D008564:Membrane Potentials; D015221:Potassium Channels / Q000187:drug effects / Q000378:metabolism*; D014617:Vacuoles / Q000378:metabolism
D000227:Adenine Nucleotides; D015221:Potassium Channels; D006160:Guanosine Triphosphate; D000255:Adenosine Triphosphate