Alomone Labs is pleased to offer the Kir Channel Blocker Explorer Kit (#EK-112). The Explorer Kit contains many classical Kir channel blockers, ideal for screening purposes.
Kir1.1 (ROMK1) was the first member of the family of inward rectifying K+ channels to be cloned1. The family includes 15 members that are structurally and functionally different from the voltage-dependent K+ channels.
The family’s topology consists of two transmembrane domains that flank a single and highly conserved pore region with intracellular N- and C-termini. As is the case for the voltage-dependent K+ channels the functional unit for the Kir channels is composed of four subunits that can assemble as either homo- or hetero-tetramers.
Kir channels are characterized by a K+ efflux that is limited by depolarizing membrane potentials thus making them essential for controlling resting membrane potential and K+ homeostasis2.