Potassium channel subfamily K member 18; Outward rectifying potassium channel. Produces rapidly activating outward rectifier K(+) currents. May function as background potassium channel that sets the resting membrane potential. Channel activity is directly activated by calcium signal. Activated by the G(q)-protein coupled receptor pathway. The calcium signal robustly activates the channel via calcineurin, whereas the anchoring of 14-3- 3/YWHAH interferes with the return of the current to the resting state after activation. Inhibited also by arachidonic acid and other naturally occurring [...]

Potassium channel subfamily K member 12; Probable potassium channel subunit. No channel activity observed in heterologous systems. May need to associate with another protein to form a functional channel (By similarity).

Potassium channel subfamily K member 13; Potassium channel displaying weak inward rectification in symmetrical K(+) solution; Belongs to the two pore domain potassium channel (TC 1.A.1.8) family.

Potassium channel subfamily K member 15; Probable potassium channel subunit. No channel activity observed in heterologous systems. May need to associate with another protein to form a functional channel.

Potassium channel subfamily K member 4; Voltage-insensitive potassium channel. Channel opening is triggered by mechanical forces that deform the membrane. Channel opening is triggered by raising the intracellular pH to basic levels (By similarity). The channel is inactive at 24 degrees Celsius (in vitro); raising the temperature to 37 degrees Celsius increases the frequency of channel opening, with a further increase in channel activity when the temperature is raised to 42 degrees Celsius (By similarity). Plays a role in the perception of pain caused by heat (By similarity). Plays a ro [...]

Potassium channel subfamily K member 9; pH-dependent, voltage-insensitive, background potassium channel protein.

Potassium channel subfamily K member 3; pH-dependent, voltage-insensitive, background potassium channel protein. Rectification direction results from potassium ion concentration on either side of the membrane. Acts as an outward rectifier when external potassium concentration is low. When external potassium concentration is high, current is inward. Belongs to the two pore domain potassium channel (TC 1.A.1.8) family.

Potassium channel subfamily K member 5; pH-dependent, voltage insensitive, outwardly rectifying potassium channel. Outward rectification is lost at high external K(+) concentrations.

Potassium channel subfamily K member 6; Exhibits outward rectification in a physiological K(+) gradient and mild inward rectification in symmetrical K(+) conditions; Belongs to the two pore domain potassium channel (TC 1.A.1.8) family.