KCNIP4, also known as Kv channel-interacting protein 4, is part of the Kv channel-interacting protein (KCNIP) family, also referred to as Kv channel regulatory proteins (KCHIPs). These proteins associate with voltage-gated potassium (Kv) channels and play a crucial role in modulating their function. KCNIP4 primarily regulates the properties of Kv channels, which are integral membrane proteins essential for controlling cellular electrical activity by managing the flow of potassium ions across membranes. Through its interaction with Kv channels, KCNIP4 influences their gating kinetics, voltage sensitivity, and membrane trafficking.