Enables voltage-gated potassium channel activity. Acts upstream of or within potassium ion transport. Predicted to be located in endoplasmic reticulum and plasma membrane. Predicted to be part of voltage-gated potassium channel complex. Predicted to be integral component of membrane. Orthologous to human KCNG3 (potassium voltage-gated channel modifier subfamily G member 3). [provided by Alliance of Genome Resources, Apr 2022]