Different xanthines cause membrane potential oscillations in a unicellular green alga [Chlorophyceae] pointing to a ryanodine/cADPR receptor Ca2+ channel

Different xanthines cause membrane potential oscillations in a unicellular green alga [Chlorophyceae] pointing to a ryanodine/cADPR receptor Ca2+ channel

In the unicellular green alga Eremosphaera viridis caffeine induces oscillations of cytosolic Ca2+ which cause membrane potential oscillations. Application of the caffeine analogues isocaffeine, theophylline, and isotheophylline resulted in membrane potential oscillations with a structure-activity r...

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Veröffentlicht in:Plant and cell physiology 1999-04, Vol.40 (4), p.453-456
Hauptverfasser: Bauer, C.S. (Universitaet Wuerzburg (Germany)), Simonis, W, Schoenknecht, G
Format: Artikel
Sprache:eng
Schlagworte:
CALCIO
CALCIUM
CELL MEMBRANES
CHLOROPHYCEAE
Cytosolic Ca2
Eremosphaera viridis
ION
IONES
IONS
MEMBRANAS CELULARES
MEMBRANE CELLULAIRE
Oscillations
Ryanodine/cADPR receptor
XANTHINE
XANTHINES
XANTINAS
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Zusammenfassung:In the unicellular green alga Eremosphaera viridis caffeine induces oscillations of cytosolic Ca2+ which cause membrane potential oscillations. Application of the caffeine analogues isocaffeine, theophylline, and isotheophylline resulted in membrane potential oscillations with a structure-activity relationship comparable to isolated ryanodine/cyclic ADPribose (cADPR) receptor Ca2+ channels from animal cells.
ISSN:0032-0781
1471-9053
DOI:10.1093/oxfordjournals.pcp.a029563