Inwardly rectifying K(+) (Kir) channels allow K(+) to move more easily into rather than out of the cell. They have diverse physiological functions depending on their type and their location. There… (More)
Inwardly rectifying potassium (K+) channels (Kir) in Müller cells, the dominant glial cells in the retina, are supposed to be responsible for the spatial buffering action of K+ ions. The molecular… (More)
2؉ Channels cytosis (reviewed in Geppert and Sü dhof, 1998). In its GTP bound form, Rab3 is associated with synaptic vesi-cles as well as with rabphilin, Noc2, and RIM1. Because RIM1 is specifically… (More)
Proceedings of the National Academy of Sciences…
2008
An endocochlear potential (EP) of +80 mV is essential for audition. Although the regulation of K(+) concentration ([K(+)]) in various compartments of the cochlear stria vascularis seems crucial for… (More)
Ca(2+) influx through voltage-gated channels initiates the exocytotic fusion of synaptic vesicles to the plasma membrane. Here we show that RIM binding proteins (RBPs), which associate with Ca(2+)… (More)
The inwardly rectifying K+ channel subunit Kir5.1 is expressed abundantly in the brain, but its precise distribution and function are still largely unknown. Because Kir5.1 is co-expressed with Kir4.1… (More)
Cochlear endolymph has a highly positive potential of approximately +80 mV. This so-called endocochlear potential (EP) is essential for hearing. Although pivotal roles of K+ channels in the formation… (More)
Cochlear endolymph, an extracellular solution containing 150 mM K+, exhibits a positive potential of +80 mV. This is called the endocochlear potential (EP) and is essential for audition. The… (More)
An inwardly rectifying potassium channel predominantly expressed in glial cells, Kir4.1/KAB-2, has a sequence of Ser-Asn-Val in its carboxyl-terminal end, suggesting a possible interaction with an… (More)
Endolymph, the extracellular solution in cochlea, contains 150 mM K(+) and exhibits a potential of approximately +80 mV relative to neighboring extracellular spaces. This unique situation, essential… (More)