Protein
Potassium channel GORK
Organism
Arabidopsis thaliana
Function
Major selective outward-rectifying potassium channel of the guard cell membrane. Involved in regulation of stomatal movements according to the water status. Assuming opened or closed conformations in response to the voltage difference across the membrane, the channel is activated by depolarization. Conductance of the channel is modulated in a potassium-dependent fashion. May interact with the cytoskeleton or with regulatory proteins.
Similarity
Belongs to the potassium channel family. Plant (TC 1.A.1.4) subfamily.
Sequence
MGRLRRRQEIIDHEEEESNDDVSSRRGKLSLAETFRWLDSSEHRRIETDGHNDYKYIIHPKNRWYKAWEMFILVWAIYSSLFTPMEFGFFRGLPERLFVLDIVGQIAFLVDIVLQFFVAYRDTQTYRTVYKPTRIAFRYLKSHFLMDFIGCFPWDLIYKASGKHELVRYLLWIRLFRVRKVVEFFQRLEKDTRINYLFTRILKLLFVEVYCTHTAACIFYYLATTLPPENEGYTWIGSLKLGDYSYENFREIDLWKRYTTALYFAIVTMATVGYGDIHAVNLREMIFVMIYVSFDMVLGAYLIGNITALIVKGSNTERFRDKMNDLISFMNRKKLGRDLRSQITGHVRLQYDSHYTDTVMLQDIPASIRAKIAQLLYLPYIKKVPLFKGCSTEFINQIVIRLHEEYFLPGEVITEQGNVVDHLYFVCEGLLEALVTKTDGSEESVTLLGPHTSFGDISIICNISQPFTVRVCELCHLLRLDKQSFSNILEIYFHDGRTILNNIMEEKESNDRIKKLESDIVIHIGKQEAELALKVNSAAFQGDFYQLKSLIRSGADPNKTDYDGRSPLHLAACRGYEDITLFLIQEGVDVNLKDKFGHTPLFEAVKAGQEGVIGLLVKEGASFNLEDSGNFLCTTVAKGDSDFLKRLLSSGMNPNSEDYDHRTPLHVAASEGLFLMAKMLVEAGASVISKDRWGNSPLDEARLCGNKKLIKLLEDVKNAQSSIYPSSLRELQEERIERRKCTVFPFHPQEAKEERSRKHGVVVWIPSNLEKLIVTAAKELGLSDGASFVLLSEDQGRITDIDMISDGHKLYMISDTTDQT