gamma-glutamyl carboxylase activity

Catalysis of the reaction: peptidyl-glutamate + reduced vitamin K + CO2 + O2 = peptidyl-gamma-carboxyglutamate + vitamin K epoxide.

potassium ion binding

Binding to a potassium ion (K+).

neuromedin K receptor binding

Binding to a neuromedin K receptor.

substance K receptor binding

Binding to a substance K receptor.

potassium:sodium symporter activity

Enables the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: K+(out) + Na+(out) = K+(in) + Na+(in).

potassium:proton antiporter activity

Enables the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: K+(in) + H+(out) = K+(out) + H+(in).

potassium:proton symporter activity

Enables the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: K+(out) + H+(out) = K+(in) + H+(in).

P-type potassium transmembrane transporter activity

Enables the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: ATP + H2O + K+(out) = ADP + phosphate + K+(in).

potassium:chloride symporter activity

Enables the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: K+(out) + Cl-(out) = K+(in) + Cl-(in).

amino acid:potassium symporter activity

Enables the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: amino acid(out) + K+(out) = amino acid(in) + K+(in).