Highly selective inward-rectifying potassium channel. This voltage-dependent channel could mediate long-term potassium influx into guard cells leading to stomatal opening. Assuming opened or closed conformations in response to the voltage difference across the membrane, the channel is activated by hyperpolarization. The channel activity is enhanced upon external acidification.

Belongs to the potassium channel family. Plant (TC 1.A.1.4) subfamily.

697 amino acids

MSISCTRNFFKRFCVEEYNMDTFKHSSFLSADLLPSLGARINQSTKLRKHIISPFDPRFRGWEMWLVILVIYSAWICPFEFAFITYKKDALFIIDNIVNGFFAIDIILTFFVAYLDSHSYLLVDKPKKIAIRYLSTWFAFDVCSTAPFQSLSLLFKYNGSEIGFRVLSMLRLWRLRRVSSLFARLEKDIRFNYFWTRCTKLISVTLFAVHCAGCFAYLIADQYHDPTKTWIGAVYPNFKETSVWSRYVTALYWSITTLTTTGYGDLHAENPREMLFFVFFMLFNLGFTSYLIGNMTNLVVHWTSRTRNFRDTVRAASEFASRNQLPPNIQDQMLSHICLKFKTEGLKQQEALNGLPKAIRSSIANYLFFPIVQNVYLFHGVSRNFLFQLVSDIDAEYFPPREDVILQNEAPTDLYILVSGAVDFTVYVGEEDQVQGKAVVGDAFGEIGVLCYTPQPFTVRTTELSQILRISKKSLMSAMRAHVEDGRVIMNNLFMKLRGQQSIAIDDPNSEPESLLKEWLVGGSKTGEGNASDQGHGHKYLQLHDSENIDMGSTEWRDSRRSGYGETKRVREHTIEIEEGEKPNKEFDGKGCSDADLTSFEFHSQEAYPYCRSNIQIKQHEAAKPKDKRVTIHLKSRDKDLSKLIILPASIEELLRLAGEKFGYSFTKVTNAENAEIDDEDVIRDGDHLYILINENS

80.2 kDa

(Note: Representative image - actual molecular weight may vary depending on tag type and expression method)

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